[native_assets] Fix framework name deduplication (#149761)

Applies flutter/flutter@02d5286 to MacOS.

I'm hoping this will fix:

* flutter/flutter#148955

Author: dcharkes

packages/flutter_tools/lib/src/isolated/native_assets/macos/native_assets.dart

@@ -214,10 +214,19 @@ Map<AssetImpl, KernelAsset> _assetTargetLocations(
   Uri? absolutePath,
 ) {
   final Set<String> alreadyTakenNames = <String>{};
-  return <AssetImpl, KernelAsset>{
-    for (final AssetImpl asset in nativeAssets)
-      asset: _targetLocationMacOS(asset, absolutePath, alreadyTakenNames),
-  };
+  final Map<String, KernelAssetPath> idToPath = <String, KernelAssetPath>{};
+  final Map<AssetImpl, KernelAsset> result = <AssetImpl, KernelAsset>{};
+  for (final AssetImpl asset in nativeAssets) {
+    final KernelAssetPath path = idToPath[asset.id] ??
+        _targetLocationMacOS(asset, absolutePath, alreadyTakenNames).path;
+    idToPath[asset.id] = path;
+    result[asset] = KernelAsset(
+      id: (asset as NativeCodeAssetImpl).id,
+      target: Target.fromArchitectureAndOS(asset.architecture!, asset.os),
+      path: path,
+    );
+  }
+  return result;
 }
 
 KernelAsset _targetLocationMacOS(

packages/flutter_tools/test/general.shard/isolated/macos/native_assets_test.dart

@@ -177,12 +177,25 @@ void main() {
       nativeAssetsYaml,
       projectUri.resolve('build/native_assets/macos/native_assets.yaml'),
     );
+    final String nativeAssetsYamlContents =
+        await fileSystem.file(nativeAssetsYaml).readAsString();
     expect(
-      await fileSystem.file(nativeAssetsYaml).readAsString(),
+      nativeAssetsYamlContents,
       contains('package:bar/bar.dart'),
     );
     expect(buildRunner.buildDryRunInvocations, 1);
     expect(buildRunner.linkDryRunInvocations, 1);
+    // Check that the framework uri is identical for both archs.
+    final String pathSeparator = const LocalPlatform().pathSeparator;
+    expect(
+      nativeAssetsYamlContents,
+      stringContainsInOrder(
+        <String>[
+          'bar.framework${pathSeparator}bar',
+          'bar.framework${pathSeparator}bar',
+        ],
+      ),
+    );
   });
 
   testUsingContext('build with assets but not enabled', overrides: <Type, Generator>{