windows: Fix title bar height when maximized (#9449)

screenshots and description incoming

## title bar when window is maximized
| before | after |
| ---    | ---   |
|
![image](https://github.com/zed-industries/zed/assets/1284289/075a943d-54db-4b71-9fa0-15f823255182)
|
![image](https://github.com/zed-industries/zed/assets/1284289/39a1d381-fcfd-4651-aab4-231a8ec3bd99)
|

## ~~caption buttons at 200%~~
~~buttons are now properly responsive at different scales~~
~~closes #9438~~
~~proper scale factor handling in follow up PR (possibly #9440)~~

<details>
  <summary>out of date image</summary>


![scale-factor](https://github.com/zed-industries/zed/assets/1284289/299d37b8-0d2e-4f2e-81db-2fff6fc59a62)
</details>

should be fixed by https://github.com/zed-industries/zed/pull/9456


Release Notes:

- N/A