Merged PR 55403: [internal/release/9.0] - merge from public

#### AI description  (iteration 1)
#### PR Classification
This pull request performs a dependency update and configuration cleanup for the internal release.

#### PR Summary
The changes align dependency versions with those in the public branch while removing obsolete package sources.
- `eng/Version.Details.xml`: Upgraded Microsoft.Extensions.Diagnostics.Testing and Microsoft.Extensions.TimeProvider.Testing versions and updated their SHAs.
- `eng/Versions.props`: Adjusted version properties to match the updated dependency versions.
- `NuGet.config`: Removed outdated package sources for dotnet-runtime and dotnet-efcore.
<!-- GitOpsUserAgent=GitOps.Apps.Server.pullrequestcopilot -->

eng/Version.Details.xml

@@ -414,13 +414,13 @@
       <Uri>https://github.com/dotnet/arcade</Uri>
       <Sha>6e2d8e204cebac7d3989c1996f96e5a9ed63fa80</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Extensions.Diagnostics.Testing" Version="10.0.0-preview.1.25559.1">
+    <Dependency Name="Microsoft.Extensions.Diagnostics.Testing" Version="10.0.0-preview.1.25565.1">
       <Uri>https://github.com/dotnet/extensions</Uri>
-      <Sha>7ddf87e16c92efd0d6d4b7da4a9ee7d185e8835f</Sha>
+      <Sha>edf9088ebb507658c60e964ebd5548421c5dbaea</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Extensions.TimeProvider.Testing" Version="10.0.0-preview.1.25559.1">
+    <Dependency Name="Microsoft.Extensions.TimeProvider.Testing" Version="10.0.0-preview.1.25565.1">
       <Uri>https://github.com/dotnet/extensions</Uri>
-      <Sha>7ddf87e16c92efd0d6d4b7da4a9ee7d185e8835f</Sha>
+      <Sha>edf9088ebb507658c60e964ebd5548421c5dbaea</Sha>
     </Dependency>
     <Dependency Name="NuGet.Frameworks" Version="6.2.4">
       <Uri>https://github.com/nuget/nuget.client</Uri>

eng/Versions.props

@@ -143,8 +143,8 @@
     <SystemIOHashingVersion>9.0.12</SystemIOHashingVersion>
     <SystemRuntimeCachingVersion>9.0.12</SystemRuntimeCachingVersion>
     <!-- Packages from dotnet/extensions -->
-    <MicrosoftExtensionsDiagnosticsTestingVersion>10.0.0-preview.1.25559.1</MicrosoftExtensionsDiagnosticsTestingVersion>
-    <MicrosoftExtensionsTimeProviderTestingVersion>10.0.0-preview.1.25559.1</MicrosoftExtensionsTimeProviderTestingVersion>
+    <MicrosoftExtensionsDiagnosticsTestingVersion>10.0.0-preview.1.25565.1</MicrosoftExtensionsDiagnosticsTestingVersion>
+    <MicrosoftExtensionsTimeProviderTestingVersion>10.0.0-preview.1.25565.1</MicrosoftExtensionsTimeProviderTestingVersion>
     <!-- Packages from dotnet/efcore -->
     <dotnetefVersion>9.0.12</dotnetefVersion>
     <MicrosoftEntityFrameworkCoreInMemoryVersion>9.0.12</MicrosoftEntityFrameworkCoreInMemoryVersion>