Show better error message if someone uses freebuff in unsupported cou… #5928

Job	Run time
build-and-check	2m 59s
test-integration-packages/internal	1m 13s
test-integration-packages/billing	1m 8s
test-integration-packages/agent-runtime	37s
test-integration-cli	41s
test-integration-sdk	1m 16s
test-integration-common	46s
test-packages/billing	47s
test-cli	54s
test-web	56s
test-packages/internal	51s
test-sdk	47s
test-common	44s
test-packages/agent-runtime	50s
test-.agents	44s
test-integration-web	47s
	16m 0s

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