React Native accessibility (#539)

* React Native accessibility

* First round of changes

* Latest update

* Checkpoint

* Wrap up

* Lint

* Remove unhelpful image hints

* Fix navigation

* Fix rebase and lint

* Mitigate an known issue with the password entry in login

* Fix composer dismiss

* Remove focus on input elements for web

* Remove i and npm

* pls work

* Remove stray declaration

* Regenerate yarn.lock

---------

Co-authored-by: Paul Frazee <pfrazee@gmail.com>

src/view/com/composer/Prompt.tsx

@@ -13,7 +13,10 @@ export function ComposePrompt({onPressCompose}: {onPressCompose: () => void}) {
     <TouchableOpacity
       testID="replyPromptBtn"
       style={[pal.view, pal.border, styles.prompt]}
-      onPress={() => onPressCompose()}>
+      onPress={() => onPressCompose()}
+      accessibilityRole="button"
+      accessibilityLabel="Compose reply"
+      accessibilityHint="Opens composer">
       <UserAvatar avatar={store.me.avatar} size={38} />
       <Text
         type="xl"