[WIP] Replicate changes from runtime pull request 120819

[Copilot]

• Understand the PR [release/8.0] Update Microsoft.Build.* versions to 17.8.43 #120819 changes (update Microsoft.Build.* versions from 17.8.29 to 17.8.43)
• Reset working directory to release/8.0 branch
• Update Microsoft.Build version in eng/Version.Details.xml (17.8.29 → 17.8.43)
• Update Microsoft.Build SHA in eng/Version.Details.xml
• Update Microsoft.SourceBuild.Intermediate.msbuild version in eng/Version.Details.xml (17.8.29-servicing-25277-01 → 17.8.43-servicing-25466-03)
• Update Microsoft.SourceBuild.Intermediate.msbuild SHA in eng/Version.Details.xml
• Update MicrosoftBuildVersion in eng/Versions.props (17.8.29 → 17.8.43)
• Verify changes match PR [release/8.0] Update Microsoft.Build.* versions to 17.8.43 #120819 exactly (2 files changed, 5 additions, 5 deletions)
• Commit and push changes

Original prompt

Please replicate the changes of @dotnet/runtime/pull/120819 on top of the target branch. Add nodes to the XML files as needed.

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