fix: mobile workspace related fixes (#1130)

* feat: put workspaces under unfinished features flag

* fix: mention that signing out will quit the app

* fix: put more affected places under features flag

packages/mobile/src/EnvironmentContext.tsx

@@ -0,0 +1,6 @@
+import { TEnvironment } from '@Root/App'
+import React from 'react'
+
+export const EnvironmentContext = React.createContext<TEnvironment | undefined>(undefined)
+
+export const SafeEnvironmentContext = EnvironmentContext as React.Context<TEnvironment>