Make `MockItemCompareService` not implement `MockService`
This PR makes ItemCompareService
no longer implement MockService
so its constructor can stay as-is.
Merging ASP.
Notify: @weizhong-wang @lloyd-carter @KJOYNER
At 10PM on Tuesday, 3/4/25, GitLab will be patched to version 17.8.4: https://outages.doit.wisc.edu/outage/94b93a4e9afac6453b4ca146bbb5a427c6856c676f
This PR makes ItemCompareService
no longer implement MockService
so its constructor can stay as-is.
Merging ASP.
Notify: @weizhong-wang @lloyd-carter @KJOYNER