Description:
When exporting a Writer document with Form Controls as a PDF, it appears that the the export process is ignoring the value set in `Control Properties -> Vert. Alignment`. The setting is obeyed within Writer itself (when I turn off Design Mode), but in the PDF text entered in the fields is always centered vertically, even when `Vert. Alignment` was set to top, bottom or default. So far, I can confirm this is the case when PDF is viewed with Okular and Google Chrome Browser.

Steps to Reproduce:
1. From the `Form Design` toolbar, click on the `Design Mode` button to enable design mode.
2. In the `Form Controls` toolbar, select `Text Box`.
3. Click and drag anywhere in the Document to create the text box.
4. Right click on the text box and select `Control Properties`.
5. In the Properties dialog, scroll down to where the `Vert. Alignment` option is, and try setting it to any value other than Middle or default.
6. Click on the `Export directly as PDF` button in the main toolbar.
7. Open the PDF with your favourite PDF viewer/editor (e.g. Okular, Google Chrome); it may ask if it should show forms, confirm with yes.
8. Enter some text in the text box.
9. Then go into Print Preview

Actual Results:
In print preview, the text appears vertically aligned in the middle of the text box, even though the value of `Vert. Alignment` was not set to middle.

Expected Results:
In print preview, the text should show up at the very top of the Text Box if `Vert. Alignment` was set to top, or at the very bottom of the text box if it was set to bottom.


Reproducible: Always


User Profile Reset: Yes



Additional Info:
Version: 7.0.4.2
Build ID: 00(Build:2)
CPU threads: 4; OS: Linux 5.10; UI render: default; VCL: kf5
Locale: en-CA (en_CA.UTF-8); UI: en-US
Debian package version: 1:7.0.4-3
Calc: threaded