OZG-5271 OZG-5781 Fix Unit Tests

alfa-client/apps/admin-e2e/project.json

alfa-client/apps/alfa-e2e/project.json

alfa-client/apps/demo-e2e/project.json

...fach-mail/incomming-mail/incomming-mail.component.spec.ts

.../libs/ui/src/lib/icon/app-icon/app-icon.component.spec.ts

...rc/lib/icon/postfach-icon/postfach-icon.component.spec.ts

...kbar-close-button/snackbar-close-button.component.spec.ts

.../libs/ui/src/lib/ui/accordion/accordion.component.spec.ts

...s/ui/src/lib/ui/back-button/back-button.component.spec.ts

...button-toggle-group/button-toggle-group.component.spec.ts

.../src/lib/ui/button-toggle/button-toggle.component.spec.ts

.../lib/ui/expansion-panel/expansion-panel.component.spec.ts

...ui/src/lib/ui/fixed-dialog/fixed-dialog.component.spec.ts

.../src/lib/ui/ozgcloud-icon/ozgcloud-icon.component.spec.ts

...gcloud-svgicon-big/ozgcloud-svgicon-big.component.spec.ts

...ib/ui/ozgcloud-svgicon/ozgcloud-svgicon.component.spec.ts

...ui/src/lib/ui/progress-bar/progress-bar.component.spec.ts

...ui/src/lib/ui/slide-toggle/slide-toggle.component.spec.ts

...inner-transparency/spinner-transparency.component.spec.ts

...ient/libs/ui/src/lib/ui/spinner/spinner.component.spec.ts