Add eslint rule no-floating-promises (#7789)

* add eslint rule no-floating-promises

* add eslint-disable comment to offending lines

apps/web/src/app/admin-console/organizations/manage/groups.component.ts

@@ -227,6 +227,8 @@ export class GroupsComponent implements OnInit, OnDestroy {
   }
 
   add() {
+    // FIXME: Verify that this floating promise is intentional. If it is, add an explanatory comment and ensure there is proper error handling.
+    // eslint-disable-next-line @typescript-eslint/no-floating-promises
     this.edit(null);
   }