[orca] Use AT-SPI2's cache for children

[Joanmarie Diggs <joanied src gnome org>]

commit 917aaf873bd0c234c799c0c6ac039ec57174aa8b
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Dec 9 15:49:55 2020 +0100

    Use AT-SPI2's cache for children
    
    Not using the cache for children was an old solution to work around not
    getting updates from apps/toolkits/browsers when objects were added or
    removed. But not using the AT-SPI2 cache comes with a performance hit
    in large accessibility trees. Therefore, we'll start using the cache for
    children and address specific offenders on a more targeted basis.

 src/orca/scripts/default.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/src/orca/scripts/default.py b/src/orca/scripts/default.py
index def26ed18..4570a8f1c 100644
--- a/src/orca/scripts/default.py
+++ b/src/orca/scripts/default.py
@@ -124,8 +124,7 @@ class Script(script.Script):
         self._sayAllContexts = []
 
         if app:
-            app.setCacheMask(
-                pyatspi.cache.DEFAULT ^ pyatspi.cache.CHILDREN ^ pyatspi.cache.NAME ^ 
pyatspi.cache.DESCRIPTION)
+            app.setCacheMask(pyatspi.cache.DEFAULT ^ pyatspi.cache.NAME ^ pyatspi.cache.DESCRIPTION)
 
     def setupInputEventHandlers(self):
         """Defines InputEventHandler fields for this script that can be