Executable model cannot parse enum in a constraint with from

Having a following test case [1], executable model fails with a following stacktrace [2]. PR with a reproducer can be found here [3].

[1] https://gist.github.com/baldimir/e5a6af0221f2f6784802be7529b5e4f7
[2] https://gist.github.com/baldimir/8a57c0dbd1dc5f0482c44339f8eba354
[3] https://github.com/kiegroup/drools/pull/2259