read receipt cell should be grouped and the avatar accessibility hidden

ElementX/Sources/Other/AccessibilityIdentifiers.swift

@@ -42,6 +42,7 @@ enum A11yIdentifiers {
     static let pollFormScreen = PollFormScreen()
     static let roomPollsHistoryScreen = RoomPollsHistoryScreen()
     static let manageRoomMemberSheet = ManageRoomMemberSheet()
+    static let pollView = PollView()
     
     struct AlertInfo {
         let primaryButton = "alert_info-primary_button"
@@ -297,4 +298,8 @@ enum A11yIdentifiers {
     struct ManageRoomMemberSheet {
         let viewProfile = "manage_room_member_sheet-view_profile"
     }
+    
+    struct PollView {
+        let summary = "poll_view-summary"
+    }
 }