Move theme controls to its own screen (#4866)

src/view/screens/PreferencesFollowingFeed.tsx

@@ -19,6 +19,7 @@ import {ToggleButton} from '#/view/com/util/forms/ToggleButton'
 import {SimpleViewHeader} from '#/view/com/util/SimpleViewHeader'
 import {Text} from '#/view/com/util/text/Text'
 import {ScrollView} from '#/view/com/util/Views'
+import {atoms as a} from '#/alf'
 
 function RepliesThresholdInput({
   enabled,
@@ -99,8 +100,8 @@ export function PreferencesFollowingFeed({}: Props) {
         contentContainerStyle={{paddingBottom: 75}}>
         <SimpleViewHeader
           showBackButton={isTabletOrMobile}
-          style={[pal.border, {borderBottomWidth: 1}]}>
-          <View style={{flex: 1}}>
+          style={[pal.border, a.border_b]}>
+          <View style={a.flex_1}>
             <Text type="title-lg" style={[pal.text, {fontWeight: 'bold'}]}>
               <Trans>Following Feed Preferences</Trans>
             </Text>