Fix jsanitize in contains_flow_or_job

[gpetretto]

This change in emmet materialsproject/emmet@7735bb1 leads to an error in contains_flow_or_job, due to the impossibility to call as_dict on some Enums.
This PR adds the enum_values=True to handle those cases.

In general, I am wondering if it is worth making this check every time a Flow is instantiated.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.42%. Comparing base (eda2a65) to head (f0aa70d).
Report is 10 commits behind head on main.

Additional details and impacted files

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##             main     #559   +/-   ##
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  Coverage   99.42%   99.42%           
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  Files          21       21           
  Lines        1564     1564           
  Branches      425      425           
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  Hits         1555     1555           
  Misses          9        9           

Files	Coverage Δ
src/jobflow/utils/find.py	100.00% <100.00%> (ø)

[FabiPi3]

@gpetretto Fyi, I am trying to store the whole enum information in the output. I think this should fix this as well. Here are my pull requests: materialyzeai/monty#640 and #565

What are your thoughts about this?