JsiRuntime should disconnect to prevent users from holding on to it. #14667
Description
Follow up from #14648.
The JsiRuntime that is handed out is not supposed to be held onto by the app. The JsiRuntime object that is passed out in events / from the CallInvoker should disconnect after the event/invoke call to prevent users from holding on to the object. In core this is passed to the app as a Runtime& which make it more clear that it shouldn't be held on to.