Migrate to @bsky.app/alf package (#9030)

* Add storybook shortcut in dev

* Migrate to alg pkg

* Migrate font_bold to new font_semi_bold

* Migrate font_heavy to font_bold

* Fix old theme refs

* Remove leading util

* Bump

* Revert "Add storybook shortcut in dev"

This reverts commit 7a86195c77fb5d449c7782e64ebabb6addfab919.

* Remove alf script

* Adjust font scale

* Bump

* Bump pkg

* Migrate values from conflicts

* Create default themes outside react

* Use built-in alf utils

* Migrate old font styles

* Remove unused tokens

* Move theme creation to more appropriate file

* Update button colors

* Adjust TextField colors, line heights

src/view/com/posts/FeedShutdownMsg.tsx

@@ -92,7 +92,7 @@ export function FeedShutdownMsg({feedUri}: {feedUri: string}) {
         t.atoms.border_contrast_low,
         a.border_t,
       ]}>
-      <Text style={[a.text_5xl, a.font_bold, t.atoms.text, a.text_center]}>
+      <Text style={[a.text_5xl, a.font_semi_bold, t.atoms.text, a.text_center]}>
         :(
       </Text>
       <Text style={[a.text_md, a.leading_snug, t.atoms.text, a.text_center]}>