fix: remove dead search property, simplify empty state message

tests/Feature/Livewire/Fuel/StationListTest.php

@@ -40,7 +40,6 @@ it('shows station cards after stations-found event', function () {
 
 it('shows empty state message when stations-found has no results', function () {
     Livewire::test(StationList::class)
-        ->set('search', 'ZZ99 9ZZ')
         ->dispatch('stations-found', results: [], meta: ['count' => 0], prediction: null, radius: 5)
         ->assertSet('hasSearched', true)
         ->assertSee('No stations found');