bug: [ionic-vue] The back button disappears when changing the page component class during page jump

### Prerequisites

- [X] I have read the [Contributing Guidelines](https://github.com/ionic-team/ionic-framework/blob/main/docs/CONTRIBUTING.md#creating-an-issue).
- [X] I agree to follow the [Code of Conduct](https://ionicframework.com/code-of-conduct).
- [X] I have searched for [existing issues](https://github.com/ionic-team/ionic-framework/issues) that already report this problem, without success.

### Ionic Framework Version

v8.x

### Current Behavior

The back button disappears when changing the page component style during page jump

### Expected Behavior

Back button still displayed

### Steps to Reproduce

1. start the following project
2. click [Page 1]

### Code Reproduction URL

https://github.com/xxllxhdj/ionic-vue-router-issue

### Ionic Info

@ionic/vue 8.3.0
@ionic/vue-router 8.3.0

### Additional Information

_No response_