Address PR #13179 reviewer feedback - VectorStoreTextSearch translation layer improvements

Refactored TextSearchFilter to LINQ translation logic in VectorStoreTextSearch per reviewer feedback:

## Exception Handling Modernization
- Eliminated exception swallowing anti-pattern (try-catch returning null)
- Replaced with explicit ArgumentException/NotSupportedException with descriptive messages
- Improved debugging experience with proper error bubbling

## Code Quality & Architecture
- Consolidated 5 duplicate methods into unified CreateClauseExpression using switch expressions
- Applied modern C# patterns (expression bodies, pattern matching)
- Removed VectorSearchFilter.OldFilter legacy fallback mechanism
- Reduced codebase complexity (net -203 lines: +100 insertions, -303 deletions)

## AOT Compatibility
- Fixed IL2091 in TextSearchKernelBuilderExtensions DynamicallyAccessedMembers annotation
- Applied RequiresDynamicCode surgically to reflection-using methods only
- Maintained AOT-friendly public surface while isolating dynamic code requirements

## Validation Results
- All 20 VectorStoreTextSearch tests passing with updated exception expectations
- Build validation passed across all projects with --warnaserror flag
- ArgumentException now thrown instead of InvalidOperationException for better error clarity

## Files Modified
- VectorStoreTextSearch.cs: Core refactoring - removed technical debt, unified expression handling
- TextSearchKernelBuilderExtensions.cs: Fixed AOT annotation mismatch (IL2091)
- TextSearchServiceCollectionExtensions.cs: Related AOT annotation updates
- VectorStoreTextSearchTests.cs: Updated test expectations for improved error handling

Author: alzarei

dotnet/src/SemanticKernel.Core/Data/TextSearch/TextSearchKernelBuilderExtensions.cs

@@ -18,7 +18,7 @@ public static class TextSearchKernelBuilderExtensions
     /// <param name="resultMapper"><see cref="ITextSearchResultMapper" /> instance that can map a TRecord to a <see cref="TextSearchResult"/></param>
     /// <param name="options">Options used to construct an instance of <see cref="VectorStoreTextSearch{TRecord}"/></param>
     /// <param name="serviceId">An optional service id to use as the service key.</param>
-    public static IKernelBuilder AddVectorStoreTextSearch<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)] TRecord>(
+    public static IKernelBuilder AddVectorStoreTextSearch<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.PublicMethods)] TRecord>(
         this IKernelBuilder builder,
         ITextSearchStringMapper? stringMapper = null,
         ITextSearchResultMapper? resultMapper = null,

dotnet/src/SemanticKernel.Core/Data/TextSearch/TextSearchServiceCollectionExtensions.cs

@@ -22,7 +22,7 @@ public static class TextSearchServiceCollectionExtensions
     /// <param name="resultMapper"><see cref="ITextSearchResultMapper" /> instance that can map a TRecord to a <see cref="TextSearchResult"/></param>
     /// <param name="options">Options used to construct an instance of <see cref="VectorStoreTextSearch{TRecord}"/></param>
     /// <param name="serviceId">An optional service id to use as the service key.</param>
-    public static IServiceCollection AddVectorStoreTextSearch<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)] TRecord>(
+    public static IServiceCollection AddVectorStoreTextSearch<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.PublicMethods)] TRecord>(
         this IServiceCollection services,
         ITextSearchStringMapper? stringMapper = null,
         ITextSearchResultMapper? resultMapper = null,
@@ -58,7 +58,7 @@ public static class TextSearchServiceCollectionExtensions
     /// <param name="resultMapper"><see cref="ITextSearchResultMapper" /> instance that can map a TRecord to a <see cref="TextSearchResult"/></param>
     /// <param name="options">Options used to construct an instance of <see cref="VectorStoreTextSearch{TRecord}"/></param>
     /// <param name="serviceId">An optional service id to use as the service key.</param>
-    public static IServiceCollection AddVectorStoreTextSearch<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)] TRecord>(
+    public static IServiceCollection AddVectorStoreTextSearch<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.PublicMethods)] TRecord>(
         this IServiceCollection services,
         string vectorSearchableServiceId,
         ITextSearchStringMapper? stringMapper = null,
@@ -104,7 +104,7 @@ public static class TextSearchServiceCollectionExtensions
     /// <param name="options">Options used to construct an instance of <see cref="VectorStoreTextSearch{TRecord}"/></param>
     /// <param name="serviceId">An optional service id to use as the service key.</param>
     [Obsolete("Use the overload which doesn't accept a textEmbeddingGenerationServiceId, and configure an IEmbeddingGenerator instead with the collection represented by vectorSearchServiceId.")]
-    public static IServiceCollection AddVectorStoreTextSearch<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)] TRecord>(
+    public static IServiceCollection AddVectorStoreTextSearch<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.PublicMethods)] TRecord>(
         this IServiceCollection services,
         string vectorSearchServiceId,
         string textEmbeddingGenerationServiceId,