Fix install text initialization (#2162)

archinstall/lib/global_menu.py

@@ -211,11 +211,11 @@ def _is_config_valid(self) -> bool:
 			return False
 		return self._validate_bootloader() is None
 
-	def _update_install_text(self, name: str, value: str):
+	def _update_install_text(self, name: Optional[str] = None, value: Any = None):
 		text = self._install_text()
 		self._menu_options['install'].update_description(text)
 
-	def post_callback(self, name: str, value: str):
+	def post_callback(self, name: Optional[str] = None, value: Any = None):
 		self._update_install_text(name, value)
 
 	def _install_text(self):

archinstall/lib/menu/abstract_menu.py

@@ -252,7 +252,7 @@ def pre_callback(self, selector_name):
 		""" will be called before each action in the menu """
 		return
 
-	def post_callback(self, selection_name: str, value: Any):
+	def post_callback(self, selection_name: Optional[str] = None, value: Any = None):
 		""" will be called after each action in the menu """
 		return True
 
@@ -299,6 +299,7 @@ def _find_selection(self, selection_name: str) -> Tuple[str, Selector]:
 
 	def run(self, allow_reset: bool = False):
 		self._sync_all()
+		self.post_callback()
 		cursor_pos = None
 
 		while True: