Remove autofocus from alt text input (#5727)

* remove autofocus from alt text input

* open to full height

src/view/com/composer/photos/ImageAltTextDialog.tsx

@@ -1,5 +1,5 @@
 import React from 'react'
-import {ImageStyle, useWindowDimensions, View} from 'react-native'
+import {Dimensions, ImageStyle, useWindowDimensions, View} from 'react-native'
 import {Image} from 'expo-image'
 import {msg, Trans} from '@lingui/macro'
 import {useLingui} from '@lingui/react'
@@ -38,7 +38,8 @@ export const ImageAltTextDialog = ({
           ...image,
           alt: enforceLen(altText, MAX_ALT_TEXT, true),
         })
-      }}>
+      }}
+      nativeOptions={{minHeight: Dimensions.get('window').height}}>
       <Dialog.Handle />
       <ImageAltTextInner
         control={control}
@@ -122,7 +123,7 @@ const ImageAltTextInner = ({
                 defaultValue={altText}
                 multiline
                 numberOfLines={3}
-                autoFocus
+                autoFocus={isWeb}
               />
             </TextField.Root>
           </View>