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/shell/desktop/Search.tsx

@@ -67,10 +67,16 @@ export const DesktopSearch = observer(function DesktopSearch() {
             onBlur={() => setIsInputFocused(false)}
             onChangeText={onChangeQuery}
             onSubmitEditing={onSubmit}
+            accessibilityRole="search"
           />
           {query ? (
             <View style={styles.cancelBtn}>
-              <TouchableOpacity onPress={onPressCancelSearch}>
+              <TouchableOpacity
+                onPress={onPressCancelSearch}
+                accessibilityRole="button"
+                accessibilityLabel="Cancel search"
+                accessibilityHint="Exits inputting search query"
+                onAccessibilityEscape={onPressCancelSearch}>
                 <Text type="lg" style={[pal.link]}>
                   Cancel
                 </Text>