fix: sync gallery feedback filters after lightbox like/rating in simple mode (#882)

In simple identity mode, likes and ratings submitted from the lightbox
never called onFeedbackChange, so the gallery's photo list (whose
like_count drives the Likes/Rated feedback filter chips) stayed stale
until a full page reload. Liked photos were missing from the Likes
filter; unliked photos stayed stuck in it.

The guest-identity-mode paths and the grid PhotoCard paths already call
onFeedbackChange after submitting - the simple-mode lightbox paths were
the only ones missing it. Add the call to the three missing paths:
submitLike (simple branch), submitRating (simple branch), and the
FeedbackIdentityModal onSubmit handler.

Verified locally (Docker build of main): like a photo in the lightbox
after navigating with Next/Prev, open the Likes filter - the photo now
appears immediately with no reload, and filter contents match the admin
feedback API exactly.

frontend/src/components/gallery/PhotoLightbox.tsx

@@ -288,6 +288,11 @@ export const PhotoLightbox: React.FC<PhotoLightboxProps> = ({
         setLikeCount(c => Math.max(0, c + (next ? 1 : -1)));
         return next;
       });
+      // Keep the gallery's photo list (like_count drives the feedback
+      // filter chips) in sync — the guest-mode path above already does
+      // this; without it, likes made in the lightbox don't appear in
+      // the Likes filter until a full page reload.
+      if (onFeedbackChange) onFeedbackChange();
     } catch (err) {
       if (handleLimitError(err)) return;
       // eslint-disable-next-line no-console
@@ -342,6 +347,9 @@ export const PhotoLightbox: React.FC<PhotoLightboxProps> = ({
       setAvgRating(Number(fresh.summary?.average_rating) || 0);
       setTotalRatings(Number(fresh.summary?.total_ratings) || 0);
     } catch {}
+    // Sync gallery photo list so the Rated filter reflects this rating
+    // without a reload (parity with the guest-mode path above).
+    if (onFeedbackChange) onFeedbackChange();
   };
 
   const goToPrevious = () => {
@@ -1010,6 +1018,9 @@ export const PhotoLightbox: React.FC<PhotoLightboxProps> = ({
             });
             setMyRating(pendingAction.rating);
           }
+          // Sync gallery photo list (feedback filter chips) — parity with
+          // the direct submit paths.
+          if (onFeedbackChange) onFeedbackChange();
           setPendingAction(null);
         }}
         feedbackType={pendingAction?.type === 'rating' ? 'rating' : 'like'}