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/screens/Feeds.tsx

@@ -700,7 +700,7 @@ function FeedsSavedHeader() {
       }>
       <IconCircle icon={ListSparkle_Stroke2_Corner0_Rounded} size="lg" />
       <View style={[a.flex_1, a.gap_xs]}>
-        <Text style={[a.flex_1, a.text_2xl, a.font_heavy, t.atoms.text]}>
+        <Text style={[a.flex_1, a.text_2xl, a.font_bold, t.atoms.text]}>
           <Trans>My Feeds</Trans>
         </Text>
         <Text style={[t.atoms.text_contrast_high]}>
@@ -726,7 +726,7 @@ function FeedsAboutHeader() {
         size="lg"
       />
       <View style={[a.flex_1, a.gap_sm]}>
-        <Text style={[a.flex_1, a.text_2xl, a.font_heavy, t.atoms.text]}>
+        <Text style={[a.flex_1, a.text_2xl, a.font_bold, t.atoms.text]}>
           <Trans>Discover New Feeds</Trans>
         </Text>
         <Text style={[t.atoms.text_contrast_high]}>