[release/7.0] Fix `DragDrop_CanTrigger()` flakiness#51141

wtgodbe merged 1 commit intorelease/7.0dotnet/aspnetcore:release/7.0from

mbuck/fix-dragdrop-test-7.0dotnet/aspnetcore:mbuck/fix-dragdrop-test-7.0Copy head branch name to clipboard