Provide more descriptive validation message for inline maps with non … #22029

Job	Run time
setup	7s
FrontendTests	2s
BuildFrontend	3m 46s
Build	9m 56s
CypressTests	26m 25s
Tests (2.12)	19m 1s
IntegrationTests (2.12)	9m 43s
SlowTests (2.12)	13m 6s
Tests (2.13)	13m 22s
IntegrationTests (2.13)	9m 45s
SlowTests (2.13)	13m 3s
publish	24m 49s
trigger-external-build (nussknacker-helm, helm-test-workflow.yaml, main)	2s
trigger-external-build (nussknacker-quickstart, pr.yml, staging)	3s
trigger-external-build (nussknacker-sample-components, pr.yml, staging)	2s
trigger-external-build (nussknacker-flink-compatibility, test.yml, staging)	2s
	2h 23m 14s

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