[orca] Add explicit formatting strings for tree role

[Joanmarie Diggs <joanied src gnome org>]

commit 9bf4bd87bf5df2dc2ef320cbe05beebee18315c5
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Nov 17 12:42:37 2020 +0100

    Add explicit formatting strings for tree role

 src/orca/formatting.py | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/src/orca/formatting.py b/src/orca/formatting.py
index 5679a8c9b..da0137684 100644
--- a/src/orca/formatting.py
+++ b/src/orca/formatting.py
@@ -519,6 +519,10 @@ formatting = {
             'unfocused': 'roleName + labelAndName',
             'basicWhereAmI': 'roleName + labelAndName'
             },
+        pyatspi.ROLE_TREE: {
+            'focused': 'labelAndName + roleName',
+            'unfocused': 'labelAndName + roleName',
+            },
         pyatspi.ROLE_TREE_ITEM: {
             'focused': 'expandableState',
             'unfocused': '(labelOrName or displayedText) + pause + expandableState + pause + positionInList',
@@ -821,6 +825,9 @@ formatting = {
         pyatspi.ROLE_TOOL_BAR: {
             'unfocused': '[Component(obj, asString(labelOrName + roleName))]',
             },
+        pyatspi.ROLE_TREE: {
+            'unfocused': '[Component(obj, asString(labelOrName + roleName))]',
+            },
         pyatspi.ROLE_TREE_ITEM: {
             'unfocused': '((substring and ' + BRAILLE_TEXT + ')\
                           or ([Component(obj, asString(labelOrName + expandableState))]\