[orca] Treat ROLE_TREE as a table if it implements the table interface

[Joanmarie Diggs <joanied src gnome org>]

commit 0bb111c3a867cbb59a7d2fe910c4e6974ef23e48
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Feb 5 17:24:06 2020 -0500

    Treat ROLE_TREE as a table if it implements the table interface

 src/orca/script_utilities.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index f30bbb8ed..5122b3fd9 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -1221,8 +1221,8 @@ class Utilities:
         if not obj:
             return None
 
-        tableRoles = [pyatspi.ROLE_TABLE, pyatspi.ROLE_TREE_TABLE]
-        isTable = lambda x: x and x.getRole() in tableRoles
+        tableRoles = [pyatspi.ROLE_TABLE, pyatspi.ROLE_TREE_TABLE, pyatspi.ROLE_TREE]
+        isTable = lambda x: x and x.getRole() in tableRoles and "Table" in pyatspi.listInterfaces(x)
         if isTable(obj):
             return obj