Fix: correctly identify if the screen is focused when handling soft resets on post feeds (#2100)

src/lib/routes/helpers.ts

@@ -1,5 +1,15 @@
+import {NavigationProp} from '@react-navigation/native'
 import {State, RouteParams} from './types'
 
+export function getRootNavigation<T>(
+  nav: NavigationProp<T>,
+): NavigationProp<T> {
+  while (nav.getParent()) {
+    nav = nav.getParent()
+  }
+  return nav
+}
+
 export function getCurrentRoute(state: State) {
   let node = state.routes[state.index || 0]
   while (node.state?.routes && typeof node.state?.index === 'number') {