fix(core): unregister onDestroy when observable errors in toSignal (#61596)

The observable terminates immediately when `error` is called, and no further emissions or completion notifications occur. Thus, we have to remove the listener in both the `error` and `complete` notifications.

PR Close #61596

packages/core/rxjs-interop/src/to_signal.ts

@@ -168,6 +168,7 @@ export function toSignal<T, U = undefined>(
     next: (value) => state.set({kind: StateKind.Value, value}),
     error: (error) => {
       state.set({kind: StateKind.Error, error});
+      destroyUnregisterFn?.();
     },
     complete: () => {
       destroyUnregisterFn?.();