Tighten up eslint rule to catch unused const {_} = useLingui() (#9122)

* tighten eslint config to catch unused `useLingui`s

* fix now-invalid uses of _

* remove unused function that produces a ton of eslint warnings

* upgrade react compiler plugin

src/screens/Onboarding/StepFinished.tsx

@@ -69,7 +69,6 @@ import {Text} from '#/components/Typography'
 import * as bsky from '#/types/bsky'
 
 export function StepFinished() {
-  const {_} = useLingui()
   const {state, dispatch} = useContext(Context)
   const onboardDispatch = useOnboardingDispatch()
   const [saving, setSaving] = useState(false)
@@ -495,7 +494,6 @@ function ValueProposition({
 
 function Dot({active}: {active: boolean}) {
   const t = useTheme()
-  const {_} = useLingui()
 
   return (
     <View