Navigate to System Settings > General > Software Update > Automatic Updates . Uncheck "Install application updates from the App Store." Otherwise, Apple will silently upgrade you to Xcode 15, breaking your "extra quality" setup.
The most likely source of confusion is the version number. Apple's versioning history jumped from Xcode 10, 11, 12, and 13 to the Xcode 14 series. xcode download 142 extra quality