Make assert_not_freed have default title rather than something that has to be filled each time

[BoydyBoydy]

Versions

What versions of Godot do you want to use this feature in?
4.3+

The Feature

Basically it seems that a lot of the assert methods have the default parameters set to 'something' except for assert_not_freed.
Meaning that I have to write out a message or at least "" for each of the statements rather than focus on the testing.

I couldn't see that this was updated in code or that there was an issue for this. Possibly in a different branch.

This should be an easy fix, and is a minor issue.
It is only annoying me for the moment. I was just surprised when I had to fill something extra out.

[bitwes]

Good eye.