Joe Dolson 51d2b2924a Administration: Add unit test for term supplementary notice.
Adds a new test assertion to handle the supplemental data array passed in `ajax-response.js`. 

Follow up to [53123].

Props SergeyBiryukov, peterwilsoncc.
Fixes #55078.

git-svn-id: https://develop.svn.wordpress.org/trunk@53159 602fd350-edb4-49c9-b593-d223f7449a82
2022-04-12 15:59:45 +00:00
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