Autofocus the alt text input on all platforms, improve dismissability on native (#2690)

* sneak in a eslint fix

* autofocus the alt text input whenever we open the modal

* properly use the hook

src/state/modals/index.tsx

@@ -6,7 +6,7 @@ import {Image as RNImage} from 'react-native-image-crop-picker'
 import {ImageModel} from '#/state/models/media/image'
 import {GalleryModel} from '#/state/models/media/gallery'
 import {useNonReactiveCallback} from '#/lib/hooks/useNonReactiveCallback'
-import {EmbedPlayerSource} from '#/lib/strings/embed-player.ts'
+import {EmbedPlayerSource} from '#/lib/strings/embed-player'
 import {ThreadgateSetting} from '../queries/threadgate'
 
 export interface ConfirmModal {