fix default chunk size (Azure#47005)

Author: christothes

sdk/cloudmachine/Azure.CloudMachine/api/Azure.CloudMachine.netstandard2.0.cs

@@ -99,7 +99,7 @@ public void Add(System.Type functions) { }
     }
     public partial class EmbeddingsVectorbase
     {
-        public EmbeddingsVectorbase(OpenAI.Embeddings.EmbeddingClient client, Azure.CloudMachine.OpenAI.VectorbaseStore store = null, int factChunkSize = 0) { }
+        public EmbeddingsVectorbase(OpenAI.Embeddings.EmbeddingClient client, Azure.CloudMachine.OpenAI.VectorbaseStore store = null, int factChunkSize = 1000) { }
         public void Add(System.BinaryData data) { }
         public void Add(string text) { }
         public System.Collections.Generic.IEnumerable<Azure.CloudMachine.OpenAI.VectorbaseEntry> Find(string text, Azure.CloudMachine.OpenAI.FindOptions options = null) { throw null; }

sdk/cloudmachine/Azure.CloudMachine/src/extensions/EmbeddingsVectorbase.cs

@@ -23,7 +23,7 @@ public class EmbeddingsVectorbase
     /// <param name="client"></param>
     /// <param name="store"></param>
     /// <param name="factChunkSize"></param>
-    public EmbeddingsVectorbase(EmbeddingClient client, VectorbaseStore store = default, int factChunkSize = 0)
+    public EmbeddingsVectorbase(EmbeddingClient client, VectorbaseStore store = default, int factChunkSize = 1000)
     {
         _client = client;
         _store = store ?? new MemoryVectorbaseStore();