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/alf/util/systemUI.ts

@@ -1,7 +1,7 @@
 import * as SystemUI from 'expo-system-ui'
+import {type Theme} from '@bsky.app/alf'
 
 import {isAndroid} from '#/platform/detection'
-import {type Theme} from '../types'
 
 export function setSystemUITheme(themeType: 'theme' | 'lightbox', t: Theme) {
   if (isAndroid) {