Admin Toolbar Dropdown Icon Missing Functionality on Content Page

Problem/Motivation

The admin toolbar dropdown icon (indicated in the screenshot) on the content page does not appear to function as expected. Users are unable to access additional options or features when clicking the icon.

Observed Behavior
No menu or options are displayed when clicking the dropdown icon. The button appears to be non-functional.

Relevant Screenshots

Steps to reproduce

1. Log in as a user with administrative privileges.
2. Navigate to the Content page (/admin/content).
3. Zoom in your browser (300% should be enough).
4. Observe the dropdown menu icon in the upper right corner of the page (highlighted in the screenshot).
5. Attempt to click or interact with the icon.
6. Expected Behavior
7. Clicking the dropdown menu icon should reveal additional options or functionality, allowing administrators to access relevant features directly from the content page.

Proposed resolution

Added icon to close menu and js to proper apply css based on the state of menu open/closed

Remaining tasks

Code review & test.

User interface changes

It changes hamburger menu behaviour under tabs component.

Introduced terminology

NA

API changes

NA

Data model changes

NA

Release notes snippet

Added close icon for hamburger menu.