Adds content description to space chevrons

vector/src/main/java/im/vector/app/features/spaces/NewSpaceSummaryController.kt

@@ -135,7 +135,8 @@ class NewSpaceSummaryController @Inject constructor(
         val countState = UnreadCounterBadgeView.State(childSummary.notificationCount, childSummary.highlightCount > 0)
         val expanded = expandedStates[childSummary.roomId] == true
         val isSelected = childSummary.roomId == selectedSpace?.roomId
-        val subSpaces = childSummary.spaceChildren?.filter { childSpace -> spaceSummaries.containsSpaceId(childSpace.childRoomId) }?.sortedWith(subSpaceComparator)
+        val subSpaces = childSummary.spaceChildren?.filter { childSpace -> spaceSummaries.containsSpaceId(childSpace.childRoomId) }
+                ?.sortedWith(subSpaceComparator)
 
         newSubSpaceSummaryItem {
             id(id)

vector/src/main/res/layout/item_new_space.xml

@@ -66,7 +66,7 @@
         android:layout_height="48dp"
         android:layout_marginEnd="21dp"
         android:background="?selectableItemBackground"
-        android:importantForAccessibility="no"
+        android:contentDescription="@string/a11y_expand_space_children"
         android:scaleType="centerInside"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent"

vector/src/main/res/layout/item_new_sub_space.xml

@@ -79,7 +79,7 @@
         android:layout_height="32dp"
         android:layout_marginEnd="24dp"
         android:background="?selectableItemBackground"
-        android:importantForAccessibility="no"
+        android:contentDescription="@string/a11y_expand_space_children"
         android:scaleType="centerInside"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent"

vector/src/main/res/values/strings.xml

@@ -141,6 +141,7 @@
     <string name="create_room">Create Room</string>
     <string name="change_space">Change Space</string>
     <string name="explore_rooms">Explore Rooms</string>
+    <string name="a11y_expand_space_children">Expand space children</string>
 
     <!-- Last seen time -->