NVDAObjects/UIA/word document: collect activity ID's for UIA notifica…

…tions that should be silenced under a dedicated list. Re nvaccess#10950.

To prepare for cases where additional UIA notification activity Id's must be silenced, collect them under a dedicated list. In addition to AccSN2 (delete back word), add AccSN1 (font attributes toggle).

source/NVDAObjects/UIA/wordDocument.py

@@ -320,6 +320,11 @@ class WordDocument(UIADocumentWithTableNavigation,WordDocumentNode,WordDocumentB
 	# Microsoft Word duplicates the full title of the document on this control, which is redundant as it appears in the title of the app itself.
 	name=u""
 
+	noNotificationActivityIds = [
+		"AccSN1",  # #10950: font attributes
+		"AccSN2",  # #10851: delete activity ID
+	]
+
 	def event_UIA_notification(self, activityId=None, **kwargs):
 		# #10851: in recent Word 365 releases, UIA notification will cause NVDA to announce edit functions
 		# such as "delete back word" when Control+Backspace is pressed.