Enable React Native strict TypeScript API (#11459)

src/components/moderation/BlockDialog.tsx

@@ -226,7 +226,7 @@ function BlockDialogInner({
           <View style={[a.py_lg, a.align_center, a.justify_center]}>
             <Loader size="lg" />
           </View>
-        ) : null
+        ) : undefined
       }
       footer={
         <Dialog.FlatListFooter

src/components/moderation/ReportDialog/index.tsx

@@ -159,7 +159,7 @@ function Inner(
   const logger = ax.logger.useChild(ax.logger.Context.ReportDialog)
   const t = useTheme()
   const {t: l} = useLingui()
-  const ref = useRef<ScrollView>(null)
+  const ref = useRef<React.ComponentRef<typeof ScrollView>>(null)
   const {
     data: allLabelers,
     isLoading: isLabelerLoading,