Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
OBSOLETE: This policy is obsolete and doesn't work after Microsoft Edge 134. Specifies how the user receives related matches in Find on Page, which provides spellcheck, synonyms, and Q&A results in Microsoft Edge. If you enable or do not configure this policy, users can receive related matches in Find on Page on all sites. The results are processed through a cloud service. If you disable this policy, users can receive related matches in Find on Page on a limited set of sites. In this case, results are processed locally on the user's device. Note: This policy is obsolete. The associated cloud service has been discontinued, so the feature and policy are not supported on any versions of Microsoft Edge.