Update VS SDK to 17.10.234-preview.1

[tmat]

Fixes #71377

[mthalman]

Regarding the source build prebuilt:

.packages/microsoft.dotnet.arcade.sdk/8.0.0-beta.24113.2/tools/SourceBuild/AfterSourceBuild.proj(68,5): error : (NETCORE_ENGINEERING_TELEMETRY=AfterSourceBuild) 1 new pre-builts discovered! Detailed usage report can be found at /__w/1/s/artifacts/source-build/self/prebuilt-report/baseline-comparison.xml.
See https://aka.ms/dotnet/prebuilts for guidance on what pre-builts are and how to eliminate them.
Package IDs are:
System.Resources.Extensions.8.0.0

You configured everything correctly so that the System.Resources.Extensions package version will be overridden in the VMR build. However, outside of the VMR, repo builds do not have this behavior of overriding the package version for source build. So you'll need to add this package to the prebuilt baseline at https://github.com/dotnet/roslyn/blob/main/eng/SourceBuildPrebuiltBaseline.xml.

[mthalman]

Regarding the source build prebuilt:

.packages/microsoft.dotnet.arcade.sdk/8.0.0-beta.24113.2/tools/SourceBuild/AfterSourceBuild.proj(68,5): error : (NETCORE_ENGINEERING_TELEMETRY=AfterSourceBuild) 1 new pre-builts discovered! Detailed usage report can be found at /__w/1/s/artifacts/source-build/self/prebuilt-report/baseline-comparison.xml.
See https://aka.ms/dotnet/prebuilts for guidance on what pre-builts are and how to eliminate them.
Package IDs are:
System.Resources.Extensions.8.0.0

You configured everything correctly so that the System.Resources.Extensions package version will be overridden in the VMR build. However, outside of the VMR, repo builds do not have this behavior of overriding the package version for source build. So you'll need to add this package to the prebuilt baseline at https://github.com/dotnet/roslyn/blob/main/eng/SourceBuildPrebuiltBaseline.xml.

This same change is being made in #72429: 0153f34