[orca-list] Firefox: Strike elements not reported by Orca with read attribute

[Alex ARNAUD <alexarnaud hypra fr>]

Hello,

Environment:
- Debian Sid
- Orca master
- Firefox 59

Steps to reproduce:
1) Open Firefox
1) Paste this content on the URL bar : data:text/html,<strike>test</strike>
2) Press orca+f to read the text attribute

Result: Orca doesn't announced something for the strike.
Expected result: Orca should announce something for the strike.

Best regards.
--
Alex ARNAUD
Visual-Impairment Project Manager
Hypra - "Humanizing technology"