[BUG] Extension Options Panel can't open Add-on Page

[garywill]

Link to the file containing the bug

Describe the bug Extension Options Panel 1.9.1 can't open the Add-on Page by clicking the last button in the popup

To Reproduce Steps to reproduce the behavior:

1. Click Extension Options Panel button on toolbar
2. Click Add-ons Page at the end of UI

Expected behavior Firefox's addons page opens

Screenshots

Desktop (please complete the following information):

• OS: Linux
• Firefox update channel: ESR
• Version: 128 ESR
• Build ID:

Additional context

Uncaught ReferenceError: BrowserOpenAddonsMgr is not defined
    oncommand chrome://browser/content/browser.xhtml:1

[jathek]

It also mostly doesn't work when you go an extension in the options panel and click "Extension options" or "Manage add-on". It only works if the extension has a custom options page separate from the Firefox add-ons page.