.Net: [MEVD] Removed Experimental flag from GetService method (#11808)

### Motivation and Context

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Removed Experimental flag from GetService method as discussed during
design review meeting.

### Description

<!-- Describe your changes, the overall approach, the underlying design.
These notes will help understanding how your code works. Thanks! -->

### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [x] The code builds clean without any errors or warnings
- [x] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [x] All unit tests pass, and I have added new tests where possible
- [x] I didn't break anyone 😄

Author: dmytrostruk

dotnet/src/Connectors/VectorData.Abstractions/VectorSearch/IKeywordHybridSearch.cs

@@ -2,7 +2,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
 using System.Threading;
 
 namespace Microsoft.Extensions.VectorData;
@@ -40,6 +39,5 @@ IAsyncEnumerable<VectorSearchResult<TRecord>> HybridSearchAsync<TVector>(
     /// including itself or any services it might be wrapping. For example, to access the <see cref="VectorStoreRecordCollectionMetadata"/> for the instance,
     /// <see cref="GetService"/> may be used to request it.
     /// </remarks>
-    [Experimental("MEVD9000")]
     object? GetService(Type serviceType, object? serviceKey = null);
 }

dotnet/src/Connectors/VectorData.Abstractions/VectorSearch/IVectorSearch.cs

@@ -2,7 +2,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
 using System.Threading;
 using Microsoft.Extensions.AI;
 
@@ -66,6 +65,5 @@ IAsyncEnumerable<VectorSearchResult<TRecord>> SearchEmbeddingAsync<TVector>(
     /// including itself or any services it might be wrapping. For example, to access the <see cref="VectorStoreRecordCollectionMetadata"/> for the instance,
     /// <see cref="GetService"/> may be used to request it.
     /// </remarks>
-    [Experimental("MEVD9000")]
     object? GetService(Type serviceType, object? serviceKey = null);
 }

dotnet/src/Connectors/VectorData.Abstractions/VectorSearch/IVectorizableTextSearch.cs

@@ -2,7 +2,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
 using System.Threading;
 
 namespace Microsoft.Extensions.VectorData;
@@ -38,6 +37,5 @@ IAsyncEnumerable<VectorSearchResult<TRecord>> VectorizableTextSearchAsync(
     /// including itself or any services it might be wrapping. For example, to access the <see cref="VectorStoreRecordCollectionMetadata"/> for the instance,
     /// <see cref="GetService"/> may be used to request it.
     /// </remarks>
-    [Experimental("MEVD9000")]
     object? GetService(Type serviceType, object? serviceKey = null);
 }

dotnet/src/Connectors/VectorData.Abstractions/VectorSearch/KeywordHybridSearchExtensions.cs

@@ -1,12 +1,10 @@
 // Copyright (c) Microsoft. All rights reserved.
 
 using System;
-using System.Diagnostics.CodeAnalysis;
 
 namespace Microsoft.Extensions.VectorData;
 
 /// <summary>Provides a collection of static methods for extending <see cref="IKeywordHybridSearch{TRecord}"/> instances.</summary>
-[Experimental("MEVD9000")]
 public static class KeywordHybridSearchExtensions
 {
     /// <summary>

dotnet/src/Connectors/VectorData.Abstractions/VectorSearch/VectorSearchExtensions.cs

@@ -1,12 +1,10 @@
 // Copyright (c) Microsoft. All rights reserved.
 
 using System;
-using System.Diagnostics.CodeAnalysis;
 
 namespace Microsoft.Extensions.VectorData;
 
 /// <summary>Provides a collection of static methods for extending <see cref="IVectorizedSearch{TRecord}"/> instances.</summary>
-[Experimental("MEVD9000")]
 public static class VectorSearchExtensions
 {
     /// <summary>

dotnet/src/Connectors/VectorData.Abstractions/VectorStorage/IVectorStore.cs

@@ -2,7 +2,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -69,6 +68,5 @@ IVectorStoreRecordCollection<TKey, TRecord> GetCollection<TKey, TRecord>(string
     /// including itself or any services it might be wrapping. For example, to access the <see cref="VectorStoreMetadata"/> for the instance,
     /// <see cref="GetService"/> may be used to request it.
     /// </remarks>
-    [Experimental("MEVD9000")]
     object? GetService(Type serviceType, object? serviceKey = null);
 }

dotnet/src/Connectors/VectorData.Abstractions/VectorStorage/VectorStoreExtensions.cs

@@ -1,12 +1,10 @@
 // Copyright (c) Microsoft. All rights reserved.
 
 using System;
-using System.Diagnostics.CodeAnalysis;
 
 namespace Microsoft.Extensions.VectorData;
 
 /// <summary>Provides a collection of static methods for extending <see cref="IVectorStore"/> instances.</summary>
-[Experimental("MEVD9000")]
 public static class VectorStoreExtensions
 {
     /// <summary>

dotnet/src/Connectors/VectorData.Abstractions/VectorStorage/VectorStoreMetadata.cs

@@ -1,11 +1,8 @@
 // Copyright (c) Microsoft. All rights reserved.
 
-using System.Diagnostics.CodeAnalysis;
-
 namespace Microsoft.Extensions.VectorData;
 
 /// <summary>Provides metadata about an <see cref="IVectorStore"/>.</summary>
-[Experimental("MEVD9000")]
 public class VectorStoreMetadata
 {
     /// <summary>The name of the vector store system.</summary>

dotnet/src/Connectors/VectorData.Abstractions/VectorStorage/VectorStoreRecordCollectionMetadata.cs

@@ -1,11 +1,8 @@
 // Copyright (c) Microsoft. All rights reserved.
 
-using System.Diagnostics.CodeAnalysis;
-
 namespace Microsoft.Extensions.VectorData;
 
 /// <summary>Provides metadata about an <see cref="IVectorStoreRecordCollection{TKey, TRecord}"/>.</summary>
-[Experimental("MEVD9000")]
 public class VectorStoreRecordCollectionMetadata
 {
     /// <summary>The name of the vector store system.</summary>