Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
Visual search lets you quickly explore more related content about entities in an image. If you enable or don't configure this policy, visual search will be enabled via image hover, context menu, and search in sidebar. If you disable this policy, visual search will be disabled and you won't be able to get more info about images via hover, context menu, and search in sidebar. Note: Visual Search in Web Capture is still managed by 'WebCaptureEnabled' (Enable the Screenshot (previously named Web Capture) feature in Microsoft Edge) policy.