This is a good point. It was indeed somewhat like this in Findings, though it was only highlighting in the card. However, when double-clicking on an experiment from dashboard as a result of a search, the experiment would open with the search already filled-in.
At the moment, the only workaround is to type the search query again in the document search. From there, you will get the result highlighted and the ability to navigate the search hits using the cmd-G and shift-cmd-G shortcuts.
I have added the feature request to my todo list. Not sure yet when it will be available, but I’ll keep you posted!