Hide a round trip's return leg from the Bookings list

Showing both legs as separate rows read as two unrelated bookings rather
than one round trip. The list now only queries outbound/primary legs; the
return leg is still reachable via the outbound leg's existing "Linked Leg"
link on the detail page.

app-modules/booking/src/Filament/Resources/Bookings/Tables/BookingsTable.php

@@ -28,9 +28,16 @@ class BookingsTable
     public static function configure(Table $table): Table
     {
         return $table
-            ->modifyQueryUsing(fn (Builder $query) => $query->with([
-                'route.company', 'route.fromDestination', 'route.toDestination', 'timeSlot', 'vehicleOptions',
-            ]))
+            ->modifyQueryUsing(fn (Builder $query) => $query
+                // A round trip's return leg is its own Booking row, but
+                // showing both legs side by side in one list reads as two
+                // unrelated bookings rather than one round trip — hide it
+                // here; it's still reachable via the primary leg's "Linked
+                // Leg" link on the detail page (view its own row directly).
+                ->where('is_return_leg', false)
+                ->with([
+                    'route.company', 'route.fromDestination', 'route.toDestination', 'timeSlot', 'vehicleOptions',
+                ]))
             ->defaultSort('created_at', 'desc')
             ->columns([
                 TextColumn::make('booking_ref')