[orca] Event Manager: Add state-changed:selected to spam clearers

[Joanmarie Diggs <joanied src gnome org>]

commit b2fe75ba196bfeed1c97a5c714d8b8380f6b37d5
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Mon Jun 14 15:45:22 2021 +0200

    Event Manager: Add state-changed:selected to spam clearers
    
    This is similar to what we do with state-changed:focused. If the object
    is a container which supports selection, we might not get a focus change,
    but should get a selection change. This should also handle the case where
    gnome-shell occasionally spams us with state-changed:showing events,
    because it emits selection change events.

 src/orca/event_manager.py | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/orca/event_manager.py b/src/orca/event_manager.py
index abd652ffe..11ef776db 100644
--- a/src/orca/event_manager.py
+++ b/src/orca/event_manager.py
@@ -776,6 +776,9 @@ class EventManager:
         if event.type.startswith("object:state-changed:focused"):
             return event.detail1
 
+        if event.type.startswith("object:state-changed:selected"):
+            return event.detail1
+
         if event.type.startswith("window:activate"):
             return True