[NEOS-1304] Update JS validation to not validate on type or be debounced

[nickzelei]

This causes the javascript editor to be really jittery while typing code because it's literally firing a request on every keystroke.

If we want to do this, we should do it in a debounced format because the current experience is jittery.

This also slams our servers and is not a good practice.

We have other places that do this too that should follow suit after we come up with an improvement.

_{From SyncLinear.com | NEOS-1304}

[nickzelei]

Not super clear how to do this easily without it being really hacky. This is probably pretty low priority.