Dropdown list is not tied to the parent form control when scrolling page

[votdev]

Setup

- Rancher: v2.8.5
- Dashboard: release-2.8.patch1 060017e
- Helm: v2.16.8-rancher2

- Rancher: v2.9.3
- Dashboard: release-2.9 e1a6686
- Rancher CLI: v2.9.2
- Helm: v2.16.8-rancher2

Describe the bug
When opening a dropdown list a then scroll the page, the list is not tied to the origin form control and therefor stays at the absolute position while scrolling the page.

To Reproduce
Test 1
Open a dropbox control and scroll the page up and down.

Test 2
Go to the local cluster. Navigate to Workloads -> Deployments and click Create. Open one of the dropdown boxes that exist on this page and scroll the page with the mouse wheel.

Result
The dropdown list stays at the origin abs. position while scrolling.

Expected Result
The dropdown box should stay tied to the parent form control and should scroll up/down.

Screenshots
https://github.com/user-attachments/assets/afa47587-bbe5-49c4-8f7c-02a32a6accec

dropdown_list_2.webm

Additional context

[richard-cox]

@votdev can you update the steps to reproduce? this could apply to a few different places, and it will ensure QA have enough to start testing with

[votdev]

@votdev can you update the steps to reproduce? this could apply to a few different places, and it will ensure QA have enough to start testing with

Done. The To Reproduce section has been modified and a new video has been added.