[release/10.0] Fix Control.Dispose crash when dependent UserControl fails to load due to missing assembly#14398

LeafShi1 merged 1 commit intorelease/10.0dotnet/winforms:release/10.0from

backport/pr-13840-to-release/10.0dotnet/winforms:backport/pr-13840-to-release/10.0Copy head branch name to clipboard