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/Hooks/useSafeEnvironmentContext.ts

@@ -0,0 +1,8 @@
+import { TEnvironment } from '@Root/App'
+import { EnvironmentContext } from '@Root/EnvironmentContext'
+import { useContext } from 'react'
+
+export const useSafeEnvironmentContext = () => {
+  const env = useContext(EnvironmentContext) as TEnvironment
+  return env
+}