How do I diable the "Add X as an application for mailto links" prompt?

[szx]

Since Firefox 124 I've started seeing this annoying prompt on outlook.com every time I open it:

and closing it does not make any difference - on the next page load it opens again.

Is there a way to disable it permanently?

[jscher2000]

Hi, I'm only aware of one way to get rid of this prompt, which is to let Firefox add Outlook to your options for email links. There is no download involved, Firefox just adds the site's message compose URL to this list: https://support.mozilla.org/en-US/kb/change-program-used-open-email-links