refactor(tier): memindahkan file tiers.blade.php ke dalam folder tier dan mengubah namanya menjadi index.blade.php dan menyesuaiakn test dan component nya

app/Livewire/Studio/Loyalty/Tier.php

@@ -175,7 +175,7 @@ public function delete(TierModel $tier)
 
     public function render()
     {
-        return view('livewire.studio.loyalty.tiers', [
+        return view('livewire.studio.loyalty.tier.index', [
             'pageTitle' => 'Tier',
         ]);
     }

tests/Feature/Livewire/Studio/Loyalty/TierTest.php

@@ -48,7 +48,7 @@ function mountTierComponent(User $user)
 
 it('renders page successfully', function () {
     mountTierComponent($this->user)
-        ->assertViewIs('livewire.studio.loyalty.tiers')
+        ->assertViewIs('livewire.studio.loyalty.tier.index')
         ->assertViewHas('pageTitle', 'Tier');
 });
 
@@ -321,7 +321,7 @@ function mountTierComponent(User $user)
         ->assertHasNoErrors();
 
     expect(Membership::count())->toBe(0);
-    $this->assertDatabaseMissing('memberships', ['id' => $membership->id]);
+    $this->assertSoftDeleted('memberships', ['id' => $membership->id]);
 });
 
 /*