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/auth/create/Step3.tsx

@@ -23,6 +23,9 @@ export const Step3 = observer(({model}: {model: CreateAccountModel}) => {
           value={model.handle}
           editable
           onChange={model.setHandle}
+          // TODO: Add explicit text label
+          accessibilityLabel="User handle"
+          accessibilityHint="Input your user handle"
         />
         <Text type="lg" style={[pal.text, s.pl5, s.pt10]}>
           Your full handle will be{' '}