Demo deactivation exploit found

Note: this is actually for all versions with demo mode, not just 20w12a. If you go to .minecraft>versions>any version with demo mode>open the json and look for: {"rules": \\\\\\{"action": "allow", "features": {"is_demo_user": true}}, "value": "-demo"} and set the true to false and open the launcher with the internet turned off and launch the version of Minecraft you edited, it will be like you own it except it detects something wrong with the game when you try to load any online function though you can still do offline functions. It only works when you don't own the game or are not logged in. 

I have realized that this is not an exploit. Please close this bug