Fix broken localization in U2F, LUKS, and gfx driver preview

[Softer]

Several places where strings that should be localized never reached translators.

• authentication_handler.py:84 and encryption_menu.py:378 wrapped f-strings in tr(). The f-string evaluates before tr() runs, so xgettext extracts the literal placeholder syntax as the msgid while runtime passes the already-formatted string - the two never match. Switched both to tr('...{}').format(...), matching the pattern already used on line 95 of the same authentication file.
• profile_menu.py:116 had a hardcoded Driver: label in the gfx driver hover preview. Wrapped with the existing Graphics driver msgid - already translated in every locale and used in the same context in global_menu.py:524.

base.pot updated to expose the two new placeholder-based msgids.