feat: propagate FDv1 fallback directive from FDv2 polling and streami… #2921

Job	Run time
build-test	6m 17s
build-test-client-mac	4m 38s
contract-tests	3m 34s
build-test-curl	6m 21s
contract-tests-curl	3m 23s
build-test-client-windows	15m 6s
build-test-client-mac-curl	4m 3s
build-test-client-windows-curl	15m 44s
	59m 6s

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