fix: don't manually set highlights in loadHighlightsTab for own profile

The real issue: loadHighlightsTab was calling setHighlights(myHighlights)
before the controller subscription had populated myHighlights, resulting
in setting highlights to an empty array.

Solution: For own profile, let the sync effect handle setting highlights.
The controller subscription + sync effect is the single source of truth.
Only fetch highlights manually when viewing other users' profiles.

Flow for own profile:
1. Controller subscription populates myHighlights
2. Sync effect (useEffect) updates local highlights state
3. No manual setting needed in loadHighlightsTab

This ensures highlights are always synced from the controller, never
from a stale/empty initial value.

src/components/Me.tsx

@@ -139,11 +139,9 @@ const Me: React.FC<MeProps> = ({
     try {
       if (!hasBeenLoaded) setLoading(true)
       
-      // For own profile, use myHighlights from controller (already loaded on app start)
-      if (isOwnProfile) {
-        setHighlights(myHighlights)
-      } else {
-        // For viewing other users, fetch on-demand
+      // For own profile, highlights come from controller subscription (sync effect handles it)
+      // For viewing other users, fetch on-demand
+      if (!isOwnProfile) {
         const userHighlights = await fetchHighlights(relayPool, viewingPubkey)
         setHighlights(userHighlights)
       }