feat: upgrade filament to v4 and ensure 100% test coverage

- Upgrade Filament framework from v3 to v4
   - Update all Filament resources and pages for v4 compatibility
   - Fix test suite to maintain 100% pass rate (321 tests passing)
   - Add visibility condition for ticket close action (only when not closed)
   - Update dependencies and build assets for new Filament version
   - Maintain backward compatibility while leveraging v4 improvements

app/Filament/Resources/TicketResource/RelationManagers/ResponsesRelationManager.php

@@ -2,11 +2,16 @@
 
 namespace App\Filament\Resources\TicketResource\RelationManagers;
 
+use Filament\Schemas\Schema;
+use Filament\Actions\CreateAction;
+use Filament\Actions\EditAction;
+use Filament\Actions\DeleteAction;
+use Filament\Actions\BulkActionGroup;
+use Filament\Actions\DeleteBulkAction;
 use Filament\Forms;
 use Filament\Forms\Components\Select;
 use Filament\Forms\Components\Textarea;
 use Filament\Forms\Components\TextInput;
-use Filament\Forms\Form;
 use Filament\Resources\RelationManagers\RelationManager;
 use Filament\Tables;
 use Filament\Tables\Columns\TextColumn;
@@ -18,10 +23,10 @@ class ResponsesRelationManager extends RelationManager
 {
     protected static string $relationship = 'responses';
 
-    public function form(Form $form): Form
+    public function form(Schema $schema): Schema
     {
-        return $form
-            ->schema([
+        return $schema
+            ->components([
                 Select::make('user_id')
                     ->relationship('user', 'name')
                     ->searchable()
@@ -50,15 +55,15 @@ class ResponsesRelationManager extends RelationManager
                 //
             ])
             ->headerActions([
-                Tables\Actions\CreateAction::make(),
+                CreateAction::make(),
             ])
-            ->actions([
-                Tables\Actions\EditAction::make(),
-                Tables\Actions\DeleteAction::make(),
+            ->recordActions([
+                EditAction::make(),
+                DeleteAction::make(),
             ])
-            ->bulkActions([
-                Tables\Actions\BulkActionGroup::make([
-                    Tables\Actions\DeleteBulkAction::make(),
+            ->toolbarActions([
+                BulkActionGroup::make([
+                    DeleteBulkAction::make(),
                 ]),
             ]);
     }