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/dialogs/Embed.tsx

@@ -104,7 +104,7 @@ function EmbedDialogInner({
     <Dialog.Inner label={_(msg`Embed post`)} style={[{maxWidth: 500}]}>
       <View style={[a.gap_lg]}>
         <View style={[a.gap_sm]}>
-          <Text style={[a.text_2xl, a.font_heavy]}>
+          <Text style={[a.text_2xl, a.font_bold]}>
             <Trans>Embed post</Trans>
           </Text>
           <Text
@@ -147,7 +147,7 @@ function EmbedDialogInner({
 
           {showCustomisation && (
             <View style={[a.gap_sm, a.p_md]}>
-              <Text style={[t.atoms.text_contrast_medium, a.font_bold]}>
+              <Text style={[t.atoms.text_contrast_medium, a.font_semi_bold]}>
                 <Trans>Color theme</Trans>
               </Text>
               <ToggleButton.Group