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/components/dms/DateDivider.tsx

@@ -67,7 +67,8 @@ let DateDivider = ({date: dateStr}: {date: string}): React.ReactNode => {
           a.px_md,
         ]}>
         <Trans>
-          <Text style={[a.text_xs, t.atoms.text_contrast_medium, a.font_bold]}>
+          <Text
+            style={[a.text_xs, t.atoms.text_contrast_medium, a.font_semi_bold]}>
             {date}
           </Text>{' '}
           at {time}