consider disabling the Web Share API (Android and Windows)
From #33534 (closed): The Web Share API allows web pages to bring up a system sharing UI. Does this cause any disk leaks or proxy bypass possibilities? If it does, we should disable it.
https://bugzilla.mozilla.org/show_bug.cgi?id=1402369
"Implement Web Share API on Fenix"
https://bugzilla.mozilla.org/show_bug.cgi?id=1573029
"Implement Web Share on Windows"