[FR] Open page nested modal

### Bug Description

Hello,

When you open a page, it's opened in a modal,

If from this, you open another page, then, you have "2 MODALS" which stack them.

### Steps to Reproduce

Create a page.
Open it in a modal, open a page inside it,

You have 2 modalS.

### Expected Behavior

I still have the same modal, the content is updated, and i CAN GO BACK using arrow on the top-left corner.

### Browser and Version

Firefox 142

### AppFlowy Version(s)

0.9.64

### Screenshots

https://github.com/user-attachments/assets/9afb574b-f16f-4f98-a049-922b637609fa

### Logs and Console Output

_No response_

### Additional Context

_No response_