Establish guidelines for usage of AI in PRs #19251

Job	Run time
OpenRewrite	2m 7s
Modernizer	1m 1s
CHANGELOG.md - only unreleased touched	14s
CHANGELOG.md	7s
Checkstyle	2m 4s
Code coverage	28s
Database tests	2m 46s
GUI tests	1m 35s
Markdown	7s
Find merge conflicts	4s
Validate requirement coverage	23s
Validate Gradle Wrapper	7s
Source branch is other than "main"	1s
Unit tests	6m 32s
upload-pr-number	5s
	17m 41s

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