Datapacks with '§' in their folder name cannot be disabled

Steps to reproduce: 

• Create a new world and navigate to saves\<new_world_name>\datapacks

• Create a new datapack in this folder, just use a default .mcmeta file

• Rename the folder adding the '§' obsolete color formatting character somewhere in the name: §a§lExample Datapack Name in Green Bold§r

• Load the world, check the § character is working by running /datapack list

• Type in /datapack disable and tab autocomplete the command.

• Running this command kicks the player for "Illegal Character in Chat" as expected, due to the '§' character, but doesn't disable the datapack.