[FEATURE] test action items still works

[kaituo]

Is your feature request related to a problem?
Test if action items in https://github.com/opensearch-project/anomaly-detection-dashboards-plugin/blob/53677c54a8df8e2e77a5cb34f98acd5e7c202ab9/public/pages/DetectorDetail/utils/constants.ts still works. So far backend has changed

anomaly-detection-dashboards-plugin/public/pages/DetectorDetail/utils/constants.ts

Lines 35 to 40 in 710e3c4

	AD_MODEL_MEMORY_REACH_LIMIT: {
	//https://github.com/opensearch-project/anomaly-detection/blob/development/src/main/java/com/amazon/opendistroforelasticsearch/ad/ml/ModelManager.java#L272
	keyword: 'AD models memory usage exceeds our limit',
	cause: 'of lack of memory for the detector models',
	actionItem: 'Reduce the number of features and try again.',
	},

from 'AD models memory usage exceeds our limit' to 'models memory usage exceeds our limit'. But since AD_MODEL_MEMORY_REACH_LIMIT is not used on the frontend, there is no immediate fix needed.