User can declare valid enumeration as expression:

However it is not parsed as enumeration:

We need probably improve the conversion between UI and inner time representation.

As part of this task we should refactor to repeated logic:

• https://github.com/kiegroup/kie-wb-common/blob/master/kie-wb-common-dmn/kie-wb-common-dmn-client/src/main/java/org/kie/workbench/common/dmn/client/editors/types/listview/constraint/common/typed/common/DurationHelper.java
• https://github.com/kiegroup/kie-wb-common/blob/master/kie-wb-common-dmn/kie-wb-common-dmn-client/src/main/java/org/kie/workbench/common/dmn/client/editors/types/listview/constraint/common/typed/date/DateValueFormatter.java#L46
• https://github.com/kiegroup/kie-wb-common/pull/2553 - TimeValueFormatter