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/Select/index.web.tsx

@@ -259,7 +259,7 @@ export function Item({ref, value, style, children}: ItemProps) {
         a.text_sm,
         {outline: 0},
         (hovered || focused) && {backgroundColor: t.palette.primary_50},
-        selected && [a.font_bold],
+        selected && [a.font_semi_bold],
         a.transition_color,
         style,
       ])}>