[Bug] Watcher skips content changes in '.gitmodules' file

[goran-w]

I modified the .gitmodules file outside SourceGit and the change did not appear under Unstaged changes.

Watcher.HandleWorkingCopyFileChanged() does an early exit for .gitmodules (after setting _updateSubmodules), which means _updateWC will NOT be set for this file.

[love-linger]

Done

[goran-w]

Thanks!