Rectangle.validate is a no-op

[mramato]

It looks like Rectangle.validate has it's entire implementation wrapped inside of a pragma, but the function itself is exposed and documented. This means if our users call Rectangle.validate nothing will ever happen. We have two chocies

1. Rectangle.validate should not pragma out it's implementation
2. Rectangle.validate should be marked private and removed from the API
3. Add Rectangle.devValidate which we use internally and does pragma out, but make Rectangle.validate always perform checks.

For simplicity, I would go with 1, but if @pjcozzi or @bagnell thinks this will lead to major performance issues, we should do 3.

[pjcozzi]

Probably 2, but will evaluate when it is a priority.

[hotpocket]

I'll take this one.

[ggetz]

@hotpocket Got it!

[hotpocket]

I have submitted a pull request. The fix seems too simple, so let me know if I've missed something obvious. Thanks!

[jjspace]

#12212 has been merged which deprecates Rectangle.validate. This should now be fully removed in 1.124