OZG-4949 fix casts; add types; reorder functions; fix import

.../postfach-container/postfach-form/postfach.formservice.ts

alfa-client/libs/tech-shared/src/lib/error/error.util.ts

...ch-shared/src/lib/validation/tech.validation.util.spec.ts

...bs/tech-shared/src/lib/validation/tech.validation.util.ts

...rc/lib/ui/editor/formcontrol-editor.abstract.component.ts

...ibs/user-profile/src/lib/user-icon/user-icon.component.ts

...r-profile-in-vorgang/user-profile-in-vorgang.component.ts