PWI improvements (#3489)

* Enable home and feeds on the PWI

* Add global SigninDialog to drive useRequireAuth()

* Tweak desktop styles

* Make the logo in leftnav PWI a clickable home link

* Add label

* Improve dialog on web

* Fix query key

* Go to home after signout from settings screen

* Filter out feeds from the discover listing for logged out users which are known to break without auth

* Update profile header follow/subscribe to give signin prompt

* Show profile feeds tabs on pwi

* Add language selector to account creation footer and pwi left nav desktop

---------

Co-authored-by: dan <dan.abramov@gmail.com>

src/view/shell/NavSignupCard.tsx

@@ -3,13 +3,16 @@ import {View} from 'react-native'
 import {msg, Trans} from '@lingui/macro'
 import {useLingui} from '@lingui/react'
 
-import {s} from 'lib/styles'
-import {usePalette} from 'lib/hooks/usePalette'
-import {Text} from '#/view/com/util/text/Text'
-import {Button} from '#/view/com/util/forms/Button'
 import {useLoggedOutViewControls} from '#/state/shell/logged-out'
 import {useCloseAllActiveElements} from '#/state/util'
+import {usePalette} from 'lib/hooks/usePalette'
+import {s} from 'lib/styles'
+import {Button} from '#/view/com/util/forms/Button'
+import {Text} from '#/view/com/util/text/Text'
 import {Logo} from '#/view/icons/Logo'
+import {atoms as a} from '#/alf'
+import {AppLanguageDropdown} from '#/components/AppLanguageDropdown'
+import {Link} from '#/components/Link'
 
 let NavSignupCard = ({}: {}): React.ReactNode => {
   const {_} = useLingui()
@@ -35,7 +38,9 @@ let NavSignupCard = ({}: {}): React.ReactNode => {
         paddingTop: 6,
         marginBottom: 24,
       }}>
-      <Logo width={48} />
+      <Link to="/" label="Bluesky - Home">
+        <Logo width={48} />
+      </Link>
 
       <View style={{paddingTop: 18}}>
         <Text type="md-bold" style={[pal.text]}>
@@ -62,6 +67,10 @@ let NavSignupCard = ({}: {}): React.ReactNode => {
           </Text>
         </Button>
       </View>
+
+      <View style={[a.pt_2xl, a.w_full]}>
+        <AppLanguageDropdown />
+      </View>
     </View>
   )
 }