Delegate the sending of call notifications to Element Call (#4370)

* Stop sending call notifications manually

The Element Call widget can now assume responsibility for sending them when you start a call.

* Bump Element Call embedded package to v0.14.0

* Delegate the sending of call notifications to Element Call

* Update the SDK.

* Use 'is' prefix for boolean

---------

Co-authored-by: Doug <douglase@element.io>

ElementX/Sources/Services/Room/JoinedRoomProxy.swift

@@ -639,16 +639,6 @@ class JoinedRoomProxy: JoinedRoomProxyProtocol {
         ElementCallWidgetDriver(room: room, deviceID: deviceID)
     }
     
-    func sendCallNotificationIfNeeded() async -> Result<Void, RoomProxyError> {
-        do {
-            _ = try await room.sendCallNotificationIfNeeded()
-            return .success(())
-        } catch {
-            MXLog.error("Failed room call notification with error: \(error)")
-            return .failure(.sdkError(error))
-        }
-    }
-    
     // MARK: - Permalinks
     
     func matrixToPermalink() async -> Result<URL, RoomProxyError> {