Deleting a file that defines a QObject can nearly brick Qt VS Tools and, by extension, MSBuild

I just deleted a file that defined a QObject class (i.e. a subclass of QObject containing the Q_OBJECT) macro, because I didn't need that file or several others anymore.

When attempting to build, I now get the following error:

7> moc: FILE_PATH_HERE\central_options_manager.h: No such file 

This error completely halts the build process. If there's a way to tell MOC that this file isn't supposed to exist, I can't seem to find it.

Another potential symptom of this problem is IntelliSense suddenly losing the ability to properly interpret all modern C++ features (e.g. `namespace foo::bar`, `requires`, etc.), showing false-positive errors for them in any files it hasn't already parsed.