In your case, I know all of my components begin with a prefix indicating their type.
Examples:

knb: knobs
btn: buttons
lbl: labels

I do this to be able to assign LAFs. control callbacks, etc. as I want.
Assuming you did something similar, it would be simple enough at the outset of your project to format all the labels as you want:

const var labels = Content.getAllComponents("lbl");

for (l in labels)
	l.set("editable", false);

Editing the HISE source code is a quicker, more permanent recommendation.