Change many border widths from 1 to hairlineWidth (#4294)

* feed items

* update some more

* moar

* profile card

* composer and notifications

* settings screen

* remove border from first item in feeds

* remove border from first item in feeds

* more removal of top border

* fix flatlist rendering

* oops

* scroll to top fab

* a.border

* centeredview/list

* placeholder

* web sidebar

* search posts

* feeds list

* user lists

* list header

* account list width 1

* hide top border feedgens

* same for lists

* fix tab bar web desktop

* wait...

* show the border on desktop web

* fix lists

* fix lists

* round

src/view/shell/bottom-bar/BottomBarStyles.tsx

@@ -1,6 +1,7 @@
 import {StyleSheet} from 'react-native'
 
 import {colors} from 'lib/styles'
+import hairlineWidth = StyleSheet.hairlineWidth
 
 export const styles = StyleSheet.create({
   bottomBar: {
@@ -9,7 +10,7 @@ export const styles = StyleSheet.create({
     left: 0,
     right: 0,
     flexDirection: 'row',
-    borderTopWidth: 1,
+    borderTopWidth: hairlineWidth,
     paddingLeft: 5,
     paddingRight: 10,
   },