[release/9.0] Add Microsoft.Private.Intellisense.9.0.0-preview-20241010.1#1056

MichaelSimons merged 1 commit intorelease/9.0dotnet/source-build-reference-packages:release/9.0from

backport/pr-1055-to-release/9.0dotnet/source-build-reference-packages:backport/pr-1055-to-release/9.0Copy head branch name to clipboard