Make file upload required to submit the form in Filament 4

Hello,

I have this FileUpload element that should required to submit the form but at the same time I don't need to store anything in the database.

In the code below it doesn't store anything in the database but - despite being required - I'm able to submit the form without having uploaded any file.

FileUpload::make('video_file')
                    ->dehydrated(false)
                    ->required()
                    ->label('Video File')
                    ->disk('s3')
                    ->directory('temp')
                    ->acceptedFileTypes([
                        'video/mp4',
                        'video/quicktime',
                        'video/x-msvideo',
                        'video/x-matroska',
                        'video/x-ms-wmv',
                    ])
                    ->maxSize(2097152)
                    ->getUploadedFileNameForStorageUsing(function (TemporaryUploadedFile $file, callable $get) {
                        $code = $get('code');
                        $extension = $file->getClientOriginalExtension();
                        return $code . '.' . $extension;
                    }),

Thanks, S