[FR] Move a page in an existing page moves the page but you can't see in the target page (u see it only in the tree on the left)

### Bug Description

When you want to move a page to an existing page/document, it move the page but it can't be seen on the target page. The moved page is only available in the tree on the left pane.

### How to Reproduce

1. Create a page
2. Create another page
3. Move The 2nd page into the 1st.

### Expected Behavior

We should see the 2nd page inside the 1st page, not only in the tree of the left pane.

### Operating System

Windows 11

### AppFlowy Version(s)

windows app : v0.12.5

### Screenshots

### Additional Context

_No response_