[Feature Request] : Make reference to Debug Node max char default

[marcus-j-davies]

WARNING : The most complicated FR below!

As per a conversation with Steve:
https://discourse.nodered.org/t/feature-request-move-debug-max-chars-into-node-settings/84864

I originally suggested to move the max char setting, to the Node itself.
whilst this has benefits, it has the potential for users to cause more performance issues for themself.

So,
it was suggested to instead make a reference to the Max char defaults in the node (say a form tip), to remove the confusion with users wondering why their messages seem to be "not complete" and suggesting there is a problem with the runtime