Fix notification dropdown hover in work_item_actions

What does this MR do and why?

Fix notification dropdown hover in work_item_actions. Closes Fix work_item_actions Notifications dropdown ho... (#424108 - closed)

Changelog: fixed

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After
Screen_Recording_2023-09-12_at_10.42.20_AM	Screen_Recording_2023-09-12_at_10.45.52_AM

How to set up and validate locally

1. Visit any work item
2. Click the ellipsis at the header and hover over the notifications dropdown item
3. It should behave like any other dropdown item and have hover affect. See that the padding is also as per the merge request "three dots" notifications option

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.