[Automated] PRs inserted in VS build main-11422.29 #19237
Description
- Stop using langversion <= 7 in tests
- Add --disableLanguageFeature CLI switch and MSBuild property to selectively disable language features
- Bugfix :: Object expressions in struct types generating invalid IL with byref fields
- Bugfix :: Nullness :: Eliminate spurious warnings when working with CLI events
- Fix ILVerify CI failure: disable UpdateXlf target for net10.0 builds
- Type checker: mark generated event tree nodes as synthetic
- Remove time exec from root build scripts
- Add warning for XML documentation comments not positioned as first non-whitespace on line