Fix ai chat not on fx thread #18665

Job	Run time
CHANGELOG.md	11s
CHANGELOG.md - only unreleased touched	18s
Code coverage	26s
Database tests	2m 33s
Checkstyle	1m 59s
Validate Gradle Wrapper	5s
GUI tests	1m 32s
Markdown	7s
Modernizer	1m 16s
OpenRewrite	2m 12s
Validate requiremenet coverage	22s
Unit tests	6m 35s
Find merge conflicts	7s
Source branch is other than "main"	3s
upload-pr-number	2s
	17m 48s

Provide feedback