Fix broken localization: tr(f-string) never matches translation catalog

tr(f'Invalid configuration: {error}') evaluates the f-string before
tr() runs, so xgettext extracts the literal placeholder as the msgid
while runtime passes the formatted string - the two never match.
Switch to tr('...{}').format(...) and update msgid in base.pot.

archinstall/lib/global_menu.py

@@ -502,7 +502,7 @@ class GlobalMenu(AbstractMenu[None]):
 			return text[:-1]  # remove last new line
 
 		if error := self._validate_bootloader():
-			return tr(f'Invalid configuration: {error}')
+			return tr('Invalid configuration: {}').format(error)
 
 		self.sync_all_to_config()
 		summary = ConfigurationOutput(self._arch_config).as_summary()

archinstall/locales/base.pot

@@ -1245,7 +1245,7 @@ msgid "Product"
 msgstr ""
 
 #, python-brace-format
-msgid "Invalid configuration: {error}"
+msgid "Invalid configuration: {}"
 msgstr ""
 
 msgid "Ready to install"