Add KnownFollowers component to standard profile header (#4420)

* Add KnownFollowers component to standard profile header

* Prep for known followers screen

* Add known followers screen

* Tighten space

* Add pressed state

* Edit title

* Vertically center

* Don't show if no known followers

* Bump sdk

* Use actual followers.length to show

* Updates to show logic, space

* Prevent fresh data from applying to cached screens

* Tighten space

* Better label

* Oxford comma

* Fix count logic

* Add bskyweb route

* Useless ternary

* Minor spacing tweak

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Co-authored-by: Paul Frazee <pfrazee@gmail.com>

src/screens/Profile/Header/Shell.tsx

@@ -83,7 +83,7 @@ let ProfileHeaderShell = ({
 
       {!isPlaceholderProfile && (
         <View
-          style={[a.px_lg, a.pb_sm]}
+          style={[a.px_lg, a.py_xs]}
           pointerEvents={isIOS ? 'auto' : 'box-none'}>
           {isMe ? (
             <LabelsOnMe details={{did: profile.did}} labels={profile.labels} />