OZG-5294 OZG-5762 Remove abschliessen-buttons for users other than EA

...ent/libs/bescheid-shared/src/lib/bescheid.service.spec.ts

alfa-client/libs/bescheid-shared/src/lib/bescheid.service.ts

...vorgang-detail-bescheiden-steps-content.component.spec.ts

...tent/vorgang-detail-bescheiden-steps-content.component.ts

...bs/vorgang-shared/src/lib/vorgang-command.service.spec.ts

...nt/libs/vorgang-shared/src/lib/vorgang-command.service.ts

...rvice/src/main/java/de/ozgcloud/alfa/vorgang/Vorgang.java

...oud/alfa/vorgang/command/VorgangCommandProcessorTest.java