fix(ui): Fix yup validation bugs (#387) #2134

Job	Run time
build-cluster-init	18s
build-router	1m 2s
build-api	1m 53s
build-test-experiment-engine-plugin	36s
build-ui	1m 51s
release-rules	5s
test-engines-experiment	24s
test-engines-router	2m 9s
test-api	3m 14s
test-e2e (In-cluster credentials; API e2e)	13m 23s
test-e2e (Remote cluster credentials; SDK e2e)	11m 16s
publish / publish-router	7s
publish / publish-app	17s
	36m 35s

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