%{yast_icondir} is listed under %files, so it should be in the base package?
I remind you there was a recent PR that removed most of the YaST modules from
the base pattern though https://github.com/yast/patterns-yast/pull/31.
What may be important:
https://github.com/yast/patterns-yast/pull/31/files#diff-6cd84836aff193c29969e1e8d9e160ea7c8d36ca49ff0af9f9f796679103f5d4R76-R82
And that makes me wonder, does testing for a module that is known to be broken
on the distro make sense?