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/util/BottomSheetCustomBackdrop.tsx

@@ -1,5 +1,5 @@
 import React, {useMemo} from 'react'
-import {GestureResponderEvent, TouchableWithoutFeedback} from 'react-native'
+import {TouchableWithoutFeedback} from 'react-native'
 import {BottomSheetBackdropProps} from '@gorhom/bottom-sheet'
 import Animated, {
   Extrapolate,
@@ -8,7 +8,7 @@ import Animated, {
 } from 'react-native-reanimated'
 
 export function createCustomBackdrop(
-  onClose?: ((event: GestureResponderEvent) => void) | undefined,
+  onClose?: (() => void) | undefined,
 ): React.FC<BottomSheetBackdropProps> {
   const CustomBackdrop = ({animatedIndex, style}: BottomSheetBackdropProps) => {
     // animated variables
@@ -27,7 +27,15 @@ export function createCustomBackdrop(
     )
 
     return (
-      <TouchableWithoutFeedback onPress={onClose}>
+      <TouchableWithoutFeedback
+        onPress={onClose}
+        accessibilityLabel="Close bottom drawer"
+        accessibilityHint=""
+        onAccessibilityEscape={() => {
+          if (onClose !== undefined) {
+            onClose()
+          }
+        }}>
         <Animated.View style={containerStyle} />
       </TouchableWithoutFeedback>
     )