Uncaught exception 'TypeError' with message 'checkdate(): Argument #3 ($year) must be of type int, string given

Created a patch with Interdiff and also fixes custom commands, please review.
Thank You.

@Ranjit1032002 thank you for the interest but you've been working on a number of these tickets now. Adding just a check isn't usually a good solution. As it could be hiding a deeper issue.

If steps are not provided to reproduce that will be needed.

This error is produced when running on new relic.

Can someone please elaborate more.

As a bug it will need a test case.

Please do some checks before putting into review to receive credit.

Thanks

Also removing credit for #2 for an empty commit

The reproduction procedure is as follows
1. create a form element of type 'datelist' with FormAPI.
2. Display the screen and use the developer tools to change the value from a number to a string. (Example: 1900 -> aaa)
3. submit the form and get a 500 error for the Issue in question.

We believe this should be fixed during 10.3.

So the reproduction steps include needing an end-user to tamper with a request outside of the normal user agent controls? If that's the case, I'm not quite sure it qualifies for a critical triage. Sliding back down to normal. If there's a way for an end-user to hit this without request tampering, please feel free to re-triage accordingly!

Agreed it needs a new test case and some additional logic to check not only for emptiness, but data type. A single new case should do the trick.

Issues go into 11.x first unless they are confirmed to be D10-only. Please don't change the branch without a specific reason related to the issue's development. Thanks!