Improve handling of unselecting languanges in composer language menu (#1093)

* allow toggling off/on multiple from main composer lang menu

* fix dropdown styles for long labels

* udpate model to use new string field

* update language UI

* save langs to history on submit

* remove edit

* clean up use new fields

* default to deviceLocales

* fix default valu

* feedback

* use radio icon

src/view/com/composer/Composer.tsx

@@ -212,6 +212,7 @@ export const ComposePost = observer(function ComposePost({
     if (!replyTo) {
       store.me.mainFeed.onPostCreated()
     }
+    store.preferences.savePostLanguageToHistory()
     onPost?.()
     onClose()
     Toast.show(`Your ${replyTo ? 'reply' : 'post'} has been published`)