applets/digitalclock: port date formatting to Qt 6
This MR updates the date formatting to use Locale.ShortFormat and Locale.LongFormat instead of the removed Qt.SystemLocaleShortDate and Qt.SystemLocaleLongDate.
Edited by Amy Rose
This MR updates the date formatting to use Locale.ShortFormat and Locale.LongFormat instead of the removed Qt.SystemLocaleShortDate and Qt.SystemLocaleLongDate.