[ALF] Theme & palette cleanup (#4769)

* Invert primary scale

* Invert negative palette

* Replace theme specific styles in Toggle

* Remove theme specific colors from Button, improves secondary solid on dark mode

* TextField

* Remove from MessageItem

* Threadgate editor

* IconCircle

* Muted words

* Generate themes from hues

* Cleanup

* Deprecate more values, fix circular import

* Invert positive too, hardly use

* Button tweaks, some theme diffs

* Match disabled state for negative button

* Fix unread noty bg

src/alf/util/useColorModeTheme.ts

@@ -4,7 +4,8 @@ import * as SystemUI from 'expo-system-ui'
 
 import {isWeb} from 'platform/detection'
 import {useThemePrefs} from 'state/shell'
-import {dark, dim, light, ThemeName} from '#/alf/themes'
+import {dark, dim, light} from '#/alf/themes'
+import {ThemeName} from '#/alf/types'
 
 export function useColorModeTheme(): ThemeName {
   const theme = useThemeName()