Add Confirmation dialog for "Revert to Saved Preferences"

I can’t count how many times I’ve misclicked “Revert to Saved Preferences” after making quick preference changes that aren’t covered by Auto Save Preferences (separate issue). With the keymap being so fragile, a single misclick can completely break my configuration, which is a nightmare.

It would be great if “Revert to Saved Preferences” displayed a confirmation warning before applying.