[Vertex AI] Add error message for Firebase ML API not enabled #9516

Job	Run time
Check changed files	0s
pod-lib-lint-abtesting (iOS)	8m 12s
pod-lib-lint-auth (iOS)	10m 48s
pod-lib-lint-database (iOS)	10m 57s
pod-lib-lint-dynamiclinks (iOS)	8m 10s
pod-lib-lint-firestore (iOS)	19m 12s
pod-lib-lint-functions (iOS)	7m 47s
pod-lib-lint-inappmessaging (iOS)	9m 39s
pod-lib-lint-messaging (iOS)	26m 53s
pod-lib-lint-performance (iOS)	8m 23s
pod-lib-lint-remoteconfig (iOS)	23m 8s
pod-lib-lint-storage (iOS)	10m 51s
create_report	3m 51s
	2h 27m 51s

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