When the search popup window opens and the browser scrollbar is visible, it causes layout shift.

[xudongcc]

Issue Summary

When the search popup window opens and the browser scrollbar is visible, it causes layout shift.

This issue is similar to the situation in https://github.com/TryGhost/Ghost/pull/21895.

Steps to Reproduce

1. Open https://demo.ghost.io/
2. Click the search icon

Ghost Version

v5.110.4

Node.js Version

20

How did you install Ghost?

Docker

Database type

MySQL 8

Browser & OS version

No response

Relevant log / error output

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