Port make cooking oil unhealthy

[ZhamelSeh]

Summary

SUMMARY: [Balance] "Make cooking oil unhealthy"

Purpose of change

Cooking oil doesn't have unhealthy value, which most players would assume to be true. Make it so. Our survivors should probably try to find a more befitting food source than drinking gallons of oil months on end.

Also, today I learned that, while olive oil is particularly good for you, vegetable oil is not:
https://www.jeffnobbs.com/posts/death-by-vegetable-oil-what-the-studies-say

Describe the solution

Make cooking oil unhealthy

Describe alternatives you've considered

N/A

Testing

Drink cooking oil in large batches and debug check our healthy stat

Additional context

Copied from origin PR: CleverRaven/Cataclysm-DDA#49758

[Coolthulhu]

Though food healthiness isn't working properly at the moment.

[ZhamelSeh]

Any idea(s) on why it isn't working?

[Coolthulhu]

The update speed doesn't match one that is used in tests, so the tests - which say things are working right - don't match gameplay.
For it to start working as intended, number crunching and update of both real health update rate and tests is needed.

As far as I recall, health tests have comments explaining the discrepancy.