The 256 character limit on the MessageArgument field in many commands is too restrictive for data pack functions

The <message> field for for commands /kick, /ban, /ban-ip, /say, /msg, /teammsg and /me have been changed to only allow 256 characters in the command input. While this has no effect on commands entered into the chat box (as it itself has a character limit of 256), this is too restrictive in data packs which provide longer kick/ban messages that provide necessary details to the user.