feat: add dynamic model loading for Roo Code Cloud provider #17488

Job	Run time
platform-unit-test (windows-latest)	6m 40s
check-translations	43s
compile	2m 18s
platform-unit-test (ubuntu-latest)	4m 1s
knip	53s
check-openrouter-api-key	4s
integration-test	3m 8s
	17m 47s

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