[orca-list] Orca can no longer identify clickables in Firefox 99 nightly

[Peter Vágner <pvagner pvagner tk>]

Hello,
Recently I have noticed that with Orca master and Firefox 99 nightly 
orca can no longer identify clickable objects on the web.
Exact versions I am testing with are:
Orca 42.BETA.r14.g705c86550
Firefox 99.0a1 (2022-02-21)
Steps:
* Start orca and firefox
* Navigate to any page that has clickable content e.g. gnome.org
* Press alt+shift+a to retrieve the list of clickables
Actual results:
Orca always speaks 0 items found.
With chromium 100 it's working fine for me.
Expected results:
Orca should be able to identify and present clickable objects on the web 
with firefox.
Thanks and greetings
Peter

Attachment: OpenPGP_0x144312F3EB650A2D.asc
Description: OpenPGP public key

Attachment: OpenPGP_signature
Description: OpenPGP digital signature