Fix overflow on posts (#4899)

* overflow posts, via contentHider

* margin->padding for a bit more leeway

* overflow notifications

* overflow on header

* revert from contenthider, put on text in all places

* fix zalgo text in handle in composer

---------

Co-authored-by: Samuel Newman <10959775+mozzius@users.noreply.github.com>

src/view/com/notifications/FeedItem.tsx

@@ -253,6 +253,7 @@ let FeedItem = ({
               borderColor: pal.colors.unreadNotifBorder,
             },
         {borderTopWidth: hideTopBorder ? 0 : StyleSheet.hairlineWidth},
+        a.overflow_hidden,
       ]}
       href={itemHref}
       noFeedback
@@ -545,7 +546,7 @@ function ExpandedAuthorsList({
   }, [heightInterp, visible])
 
   return (
-    <Animated.View style={[heightStyle, styles.overflowHidden]}>
+    <Animated.View style={[a.overflow_hidden, heightStyle]}>
       {visible &&
         authors.map(author => (
           <NewLink
@@ -641,9 +642,6 @@ function AdditionalPostText({post}: {post?: AppBskyFeedDefs.PostView}) {
 }
 
 const styles = StyleSheet.create({
-  overflowHidden: {
-    overflow: 'hidden',
-  },
   pointer: isWeb
     ? {
         // @ts-ignore web only