remove hack

Author: willmcgugan

src/textual/dom.py

@@ -10,6 +10,7 @@
 import threading
 from functools import lru_cache, partial
 from inspect import getfile
+from operator import attrgetter
 from typing import (
     TYPE_CHECKING,
     Any,
@@ -1214,7 +1215,7 @@ def displayed_children(self) -> list[Widget]:
         Returns:
             A list of nodes.
         """
-        return [child for child in self._nodes if child.display]
+        return list(filter(attrgetter("display"), self._nodes))
 
     def watch(
         self,

src/textual/screen.py

@@ -662,8 +662,6 @@ def _move_focus(
                 the CSS selectors given in the argument.
         """
 
-        # TODO: This shouldn't be required
-        self._compositor._full_map_invalidated = True
         if not isinstance(selector, str):
             selector = selector.__name__
         selector_set = parse_selectors(selector)