fix: support Magistral [THINK]...[/THINK] reasoning tags #16969

Job	Run time
check-translations	44s
compile	2m 8s
knip	50s
check-openrouter-api-key	3s
platform-unit-test (windows-latest)	7m 43s
platform-unit-test (ubuntu-latest)	4m 11s
integration-test	7m 3s
	22m 42s

Provide feedback