fix(mobile): review's empty state stays below the header on iOS

apps/mobile/src/features/review/ReviewSheet.tsx

@@ -507,6 +507,16 @@ export function ReviewSheet(props: ReviewSheetProps) {
     await refreshSelectedSection();
     setIsPullRefreshing(false);
   };
+  const isRefreshing = isPullRefreshing || isSelectedSectionPending || areFilePatchesPending;
+  // A refresh that starts programmatically adds its height to the native top inset and
+  // subtracts it when it ends. If topContentInset changes in between, the inset ends up
+  // short and the content sits under the header, so the fallback ScrollView starts over.
+  const [fallbackInset, setFallbackInset] = useState(topContentInset);
+  const [fallbackScrollViewKey, setFallbackScrollViewKey] = useState(0);
+  if (fallbackInset !== topContentInset) {
+    setFallbackInset(topContentInset);
+    if (isRefreshing) setFallbackScrollViewKey((key) => key + 1);
+  }
   const reviewFileNavigatorRef = useRef<ReviewFileNavigatorHandle>(null);
   const reviewFiles = parsedDiff.kind === "files" ? parsedDiff.files : [];
   const fileVisibility = useReviewFileVisibility({
@@ -766,6 +776,7 @@ export function ReviewSheet(props: ReviewSheetProps) {
             </View>
           ) : (
             <ScrollView
+              key={fallbackScrollViewKey}
               contentContainerStyle={
                 Platform.OS === "android" && (parsedDiff.kind === "empty" || !selectedSection)
                   ? { flexGrow: 1, justifyContent: "center" }
@@ -784,7 +795,7 @@ export function ReviewSheet(props: ReviewSheetProps) {
                 // iOS has no other refresh affordance here (the explicit
                 // "Refresh current diff" menu is Android-only).
                 <RefreshControl
-                  refreshing={isPullRefreshing || isSelectedSectionPending || areFilePatchesPending}
+                  refreshing={isRefreshing}
                   onRefresh={() => void handlePullToRefresh()}
                 />
               }