fix: sign out — header emits immediately (parent handler location not found in codebase)

Made-with: Cursor

apps/client/src/app/components/header/header.component.ts

@@ -287,7 +287,7 @@ export class GfHeaderComponent implements OnChanges {
     this.assistantElement.initialize();
   }
 
-  public onSignOut() {
+  public onSignOut(): void {
     this.signOut.next();
   }