OZG-7707 Add missing labels for a11y

...-field-form/aggregation-mapping-field-form.component.html

...wizard-container/bescheid-wizard-container.component.html

...nent/src/lib/download-button/download-button.component.ts

alfa-client/libs/design-system/src/assets/person.svg

...tem/src/lib/form/button-toggle/button-toggle.component.ts

...-detail-more-menu/vorgang-detail-more-menu.component.html

...elle-button/edit-zustaendige-stelle-button.component.html

...le-dialog/search-zustaendige-stelle-dialog.component.html