[BUG] IronFox does not open tel: links with phone app

BUG

IronFox does not open tel: links.

Confirmation Checklist

• I confirm that this issue occurs on the latest release of IronFox. You can check what the latest version is on the Releases page (https://gitlab.com/ironfox-oss/IronFox/-/releases).
• I confirm that this issue occurs on the latest Nightly release of IronFox. You can find steps on how to find and install the latest Nightly release here.
• I confirm that this issue has NOT already been reported on the GitLab issue tracker (https://gitlab.com/ironfox-oss/IronFox/-/issues) and/or the Codeberg issue tracker (https://codeberg.org/ironfox-oss/IronFox/issues).
• I confirm that this issue is NOT already covered on the FAQ page (https://ironfoxoss.org/docs/faq/).
• I confirm that this issue is NOT related to a website breakage or compatibility issue as described above.
• I confirm that this issue does NOT occur on the latest release of Mozilla Firefox. You can find the latest APKs here: https://ftp.mozilla.org/pub/fenix/releases/.
• I confirm that this issue does NOT occur on the latest release of Mozilla Firefox Nightly. You can find the latest APKs here: https://ftp.mozilla.org/pub/fenix/nightly/.

Android

/e/OS 3.3 based on Android 12 (I know...)

Version

147.0

First Version

147.0 but might be older.

Add-ons

uBlock

Reason

Clicking on a phone link button tel: does not open the number in the app.

Reproduce

Go here and try to click on the phone number button -> nothing happens. Doing this with Fennec 147.0 opens the phone app just fine.