improve KDE patch:
- queue KDE filepicker requests to avoid non-opening file dialogs
happening in certain situations
- the placeholder dot in KDE file dialog in case of empty filenames
was removed, apparently not required (anymore)
pref("intl.locale.matchOS", true);
pref("browser.preferences.instantApply", true);
pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");