fix: Move "invalid graph" warning to `MapFieldInput` #5978

Job	Run time
Check file changes	5s
Build React App	3m 33s
Run Integration tests	4m 14s
E2E tests	9m 24s
Run API Tests	0s
Run React Tests	5m 17s
Generate Hasura Change Summary	0s
Upsert Vultr Instance	2m 29s
Run Pulumi Preview	0s
Run Healthcheck on Pizza Services	32s
	25m 34s

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