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/Screens/CallScreen/View/CallScreen.swift

@@ -321,7 +321,6 @@ struct CallScreen_Previews: PreviewProvider {
         clientProxy.deviceID = "call-device-id"
         
         let roomProxy = JoinedRoomProxyMock()
-        roomProxy.sendCallNotificationIfNeededReturnValue = .success(())
         
         let widgetDriver = ElementCallWidgetDriverMock()
         widgetDriver.underlyingMessagePublisher = .init()
@@ -336,8 +335,7 @@ struct CallScreen_Previews: PreviewProvider {
                                                         clientID: "io.element.elementx",
                                                         elementCallBaseURL: "https://call.element.io",
                                                         elementCallBaseURLOverride: nil,
-                                                        colorScheme: .light,
-                                                        notifyOtherParticipants: false),
+                                                        colorScheme: .light),
                                    allowPictureInPicture: false,
                                    appHooks: AppHooks(),
                                    appSettings: ServiceLocator.shared.settings,