Fix for Visual Lookup missing from Photos in iOS 26

Visual Lookup (aka visual intelligence) was missing from my photos (i) icon in iOS26. Looks like all the instructions for turning it on are outdated, and Apple doesn’t have any guides for it, so I’m sharing how I fixed it:

Settings > Search > Search and Lookup > Show Related Content (must be turned on)

Can someone at Apple please update the page regarding how the feature works.