Fix modal timeout while hidding.

cerberus/src/app/core/components/modal/modal.component.ts

@@ -22,7 +22,9 @@ export class ModalComponent implements OnInit {
             if (!modalContentClass) {
                 this.displayed = false;
                 window.setTimeout(() => {
-                    this.modalContent?.detach();
+                    if (!this.displayed) {
+                        this.modalContent?.detach();
+                    }
                 }, 1000);
             } else {
                 this.displayed = true;