[ACS-10323] a11y fix - Adding/removing favorites are not announced by SR (#5002)

* [ACS-10323] a11y fix - Adding/removing favorites are not announced by screen readers

* fix unit test

* [ACS-10323] cr fixes

projects/aca-content/assets/app.extensions.json

@@ -566,7 +566,9 @@
             "comment": "workaround for Recent Files and Search API issue",
             "type": "custom",
             "order": 400,
-            "data": "['/favorites', '/favorite/libraries']",
+            "data": {
+              "routes": ["/favorites", "/favorite/libraries"]
+            },
             "component": "app.toolbar.toggleFavorite",
             "rules": {
               "visible": [
@@ -939,7 +941,10 @@
         "comment": "workaround for Recent Files and Search API issue",
         "type": "custom",
         "order": 802,
-        "data": "['/favorites', '/favorite/libraries']",
+        "data": {
+          "routes": ["/favorites", "/favorite/libraries"],
+          "focusAfterClosed": ".adf-context-menu-source"
+        },
         "component": "app.toolbar.toggleFavorite",
         "rules": {
           "visible": [
@@ -953,6 +958,9 @@
         "type": "custom",
         "order": 803,
         "component": "app.toolbar.toggleFavoriteLibrary",
+        "data": {
+          "focusAfterClosed": ".adf-context-menu-source"
+        },
         "rules": {
           "visible": [
             "app.selection.library"