docs: fix vectorstore feature table - correct "IDs in add Documents" values (#32153)

The vectorstore feature table in the documentation was showing incorrect
information for the "IDs in add Documents" capability. Most vectorstores
were marked as ❌ (not supported) when they actually support extracting
IDs from documents.

## Problem

The issue was an inconsistency between two sources of truth:
- **JavaScript feature table** (`docs/src/theme/FeatureTables.js`):
Hardcoded `idsInAddDocuments: false` for most vectorstores
- **Python script** (`docs/scripts/vectorstore_feat_table.py`):
Correctly showed `"IDs in add Documents": True` for most vectorstores

## Root Cause

All vectorstores inherit the base `VectorStore.add_documents()` method
which automatically extracts document IDs:

```python
# From libs/core/langchain_core/vectorstores/base.py lines 277-284
if "ids" not in kwargs:
    ids = [doc.id for doc in documents]
    
    # If there's at least one valid ID, we'll assume that IDs should be used.
    if any(ids):
        kwargs["ids"] = ids
```

Since no vectorstores override `add_documents()`, they all inherit this
behavior and support IDs in documents.

## Solution

Updated `idsInAddDocuments` from `false` to `true` for 13 vectorstores:
- AstraDBVectorStore, Chroma, Clickhouse, DatabricksVectorSearch
- ElasticsearchStore, FAISS, InMemoryVectorStore,
MongoDBAtlasVectorSearch
- PGVector, PineconeVectorStore, Redis, Weaviate, SQLServer

The other 4 vectorstores (CouchbaseSearchVectorStore, Milvus, openGauss,
QdrantVectorStore) were already correctly marked as `true`.

## Impact

Users visiting
https://python.langchain.com/docs/integrations/vectorstores/ will now
see accurate information. The "IDs in add Documents" column will
correctly show ✅ for all vectorstores instead of incorrectly showing ❌
for most of them.

This aligns with the API documentation which states: "if kwargs contains
ids and documents contain ids, the ids in the kwargs will receive
precedence" - clearly indicating that document IDs are supported.

Fixes #30622.

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Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: mdrxy <[email protected]>

Author: Copilot

docs/src/theme/FeatureTables.js

@@ -1029,7 +1029,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "Chroma",
@@ -1042,7 +1042,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "Clickhouse",
@@ -1055,7 +1055,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "CouchbaseSearchVectorStore",
@@ -1081,7 +1081,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: false,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "ElasticsearchStore",
@@ -1094,7 +1094,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "FAISS",
@@ -1107,7 +1107,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "InMemoryVectorStore",
@@ -1120,7 +1120,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "Milvus",
@@ -1146,7 +1146,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "openGauss",
@@ -1172,7 +1172,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "PineconeVectorStore",
@@ -1185,7 +1185,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "QdrantVectorStore",
@@ -1211,7 +1211,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "Weaviate",
@@ -1224,7 +1224,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: true,
                 local: true,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
             {
                 name: "SQLServer",
@@ -1237,7 +1237,7 @@ const FEATURE_TABLES = {
                 passesStandardTests: false,
                 multiTenancy: false,
                 local: false,
-                idsInAddDocuments: false,
+                idsInAddDocuments: true,
             },
         ],
     }