Removing clickability from a image that has states

So here's what's happening.  I've got a full screen image with various hotspots that I want users to click on (that takes them to another scene which when completed, changes a variable to True).  When they complete the scene, it brings them back to the first image.  That all is working just fine, but I've added a small icon next to the hotspots so users will know to click on the area.  That icon changes when they complete the associated scene.  However, when testing, I can click on the icon, and doing so will change its state to Visited and the icon will change.  How can I remove the ability to click on the icon?

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