State machine crashes

[stefanceriu]

Out state machines seem to be getting confused quite a lot, we should fix that.

https://sentry.tools.element.io/organizations/element/issues/?project=44&query=is%3Aunresolved+statemachine&statsPeriod=14d

ElementX/AppCoordinator.swift:140: Fatal error: Failed transition with context: Context(event: Optional(ElementX.AppCoordinatorStateMachine.Event.startWithExistingSession), fromState: ElementX.AppCoordinatorStateMachine.State.signedIn, toState: ElementX.AppCoordinatorStateMachine.State.signedIn, userInfo: nil)

ElementX/UserSessionFlowCoordinator.swift:92: Fatal error: Failed transition with context: Context(event: Optional(ElementX.UserSessionFlowCoordinatorStateMachine.Event.dismissedRoomScreen), fromState: ElementX.UserSessionFlowCoordinatorStateMachine.State.suspended, toState: ElementX.UserSessionFlowCoordinatorStateMachine.State.suspended, userInfo: nil)

ElementX/UserSessionFlowCoordinator.swift:88: Fatal error: Failed transition with context: Context(event: Optional(ElementX.UserSessionFlowCoordinatorStateMachine.Event.showRoomScreen(roomId: "!bMQJVUzIiRoKoPHHfj:matrix.org")), fromState: ElementX.UserSessionFlowCoordinatorStateMachine.State.roomScreen(roomId: "!eMqocHMcvmMFuUpioO:matrix.org"), toState: ElementX.UserSessionFlowCoordinatorStateMachine.State.roomScreen(roomId: "!eMqocHMcvmMFuUpioO:matrix.org"), userInfo: nil)

... and more.