refactor: TripDetailView loads games on demand, improve poll UI

- Refactor TripDetailView to fetch games from AppDataProvider when not
  provided, adding loading state indicator for better UX
- Update all callers (25+ HomeContent variants, TripOptionsView, HomeView)
  to use simpler TripDetailView(trip:) initializer
- Fix PollDetailView sheet issue by using sheet(item:) instead of
  sheet(isPresented:) to prevent blank screen on first tap
- Improve PollDetailView UI with Theme styling, icons, and better
  visual hierarchy for share code, voting status, and results sections

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

SportsTime/Features/Home/Views/HomeView.swift

@@ -106,7 +106,7 @@ struct HomeView: View {
         }
         .sheet(item: $selectedSuggestedTrip) { suggestedTrip in
             NavigationStack {
-                TripDetailView(trip: suggestedTrip.trip, games: suggestedTrip.richGames)
+                TripDetailView(trip: suggestedTrip.trip)
             }
         }
         .sheet(isPresented: $showProPaywall) {
@@ -315,7 +315,7 @@ struct SavedTripCard: View {
 
     var body: some View {
         NavigationLink {
-            TripDetailView(trip: trip, games: savedTrip.games)
+            TripDetailView(trip: trip)
         } label: {
             HStack(spacing: Theme.Spacing.md) {
                 // Route preview icon
@@ -555,7 +555,7 @@ struct SavedTripsListView: View {
                 ForEach(Array(sortedTrips.enumerated()), id: \.element.id) { index, savedTrip in
                     if let trip = savedTrip.trip {
                         NavigationLink {
-                            TripDetailView(trip: trip, games: savedTrip.games)
+                            TripDetailView(trip: trip)
                         } label: {
                             SavedTripListRow(trip: trip)
                         }