Turbopack: convert HashMap to IndexMap for deterministic tasks (#84641)

### What?

Ensure more deterministic builds

Author: sokra

crates/next-api/src/loadable_manifest.rs

@@ -1,7 +1,6 @@
 use anyhow::Result;
 use next_core::{next_manifests::LoadableManifest, util::NextRuntime};
-use rustc_hash::FxHashMap;
-use turbo_tasks::{ResolvedVc, TryFlatJoinIterExt, Vc};
+use turbo_tasks::{FxIndexMap, ResolvedVc, TryFlatJoinIterExt, Vc};
 use turbo_tasks_fs::{File, FileContent, FileSystemPath};
 use turbopack_core::{
     asset::AssetContent,
@@ -21,7 +20,7 @@ pub async fn create_react_loadable_manifest(
 ) -> Result<Vc<OutputAssets>> {
     let dynamic_import_entries = &*dynamic_import_entries.await?;
 
-    let mut loadable_manifest: FxHashMap<String, LoadableManifest> = FxHashMap::default();
+    let mut loadable_manifest: FxIndexMap<String, LoadableManifest> = FxIndexMap::default();
 
     for (_, (module_id, chunk_output)) in dynamic_import_entries.into_iter() {
         let chunk_output = chunk_output.await?;

turbopack/crates/turbopack-resolve/src/typescript.rs

@@ -1,9 +1,9 @@
-use std::{collections::HashMap, mem::take};
+use std::mem::take;
 
 use anyhow::Result;
 use serde_json::Value as JsonValue;
 use turbo_rcstr::{RcStr, rcstr};
-use turbo_tasks::{ResolvedVc, ValueDefault, Vc, fxindexset};
+use turbo_tasks::{FxIndexMap, ResolvedVc, ValueDefault, Vc, fxindexset};
 use turbo_tasks_fs::{FileContent, FileJsonContent, FileSystemPath, FileSystemPathOption};
 use turbopack_core::{
     asset::Asset,
@@ -287,7 +287,7 @@ pub async fn tsconfig_resolve_options(
         None
     };
 
-    let mut all_paths = HashMap::new();
+    let mut all_paths = FxIndexMap::default();
     for (content, source) in configs.iter().rev() {
         if let FileJsonContent::Content(json) = &*content.await?
             && let JsonValue::Object(paths) = &json["compilerOptions"]["paths"]