New Select component (#8323)

* radix select component on web

* native implementation (wip)

* fix sheet height/padding

* tone down web styles

* react 19 cleanup

* replace primary language select

* change style on native

* get auto placeholder working

* more style tweaks

* replace app language dropdown

* replace rnpickerselect with native select

* rm react-native-picker-select dependency

* rm placeholder, since a value is always selected

* docblock for renderItem

* add more docblocks

* add style prop to item

* pass selectedValue through renderItem

* fix context

* Style overflow buttons

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Co-authored-by: Eric Bailey <git@esb.lol>

src/view/shell/NavSignupCard.tsx

@@ -65,7 +65,7 @@ let NavSignupCard = ({}: {}): React.ReactNode => {
       </View>
 
       <View style={[a.mt_md, a.w_full, {height: 32}]}>
-        <AppLanguageDropdown style={{marginTop: 0}} />
+        <AppLanguageDropdown />
       </View>
     </View>
   )