OZG-5450 Fix file upload field

...form/file-upload-button/file-upload-button.component.html

...b/form/file-upload-button/file-upload-button.component.ts

...t/libs/design-system/src/lib/spinner/spinner.component.ts

alfa-client/libs/design-ui/src/index.ts

...rc/lib/file-upload-field/file-upload-field.component.html

.../src/lib/file-upload-field/file-upload-field.component.ts

...esign-ui/src/lib/formcontrol-editor.abstract.component.ts

...ent/libs/design-ui/src/lib/spinner/spinner.component.html

...ang-detail-bescheiden-attachment-hochladen.component.html

...ient/libs/vorgang-detail/src/lib/vorgang-detail.module.ts