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/com/util/LoadingPlaceholder.tsx

@@ -15,6 +15,7 @@ import {useTheme as useTheme_NEW} from '#/alf'
 import {Bubble_Stroke2_Corner2_Rounded as Bubble} from '#/components/icons/Bubble'
 import {Heart2_Stroke2_Corner0_Rounded as HeartIconOutline} from '#/components/icons/Heart2'
 import {Repost_Stroke2_Corner2_Rounded as Repost} from '#/components/icons/Repost'
+import hairlineWidth = StyleSheet.hairlineWidth
 
 export function LoadingPlaceholder({
   width,
@@ -233,7 +234,7 @@ export function FeedLoadingPlaceholder({
         {
           paddingHorizontal: 12,
           paddingVertical: 18,
-          borderTopWidth: showTopBorder ? 1 : 0,
+          borderTopWidth: showTopBorder ? hairlineWidth : 0,
         },
         pal.border,
         style,