fix: Fix sauce sandwich containing dairy and meat

[RobbieNeko]

Purpose of change

Fixes the fact that sauce sandwiches made out of entirely okay ingredients would suddenly trigger lactose intolerance (and presumably meat intolerance / allergy too) for no reason.

Describe the solution

Explicitly defines materials to prevent it inheriting the deluxe sandwhich's materials

Describe alternatives you've considered

• Leave the dairy matter because technically butter is a valid ingredient, and brioche and biscuits are made with milk
  • The vast majority of the ingredients are non-dairy. As such, ingredient democracy has dairy removal winning.

Testing

Additional context

Are there other oddities in the sandwiches file? Maybe, but it'd be good PR fodder for new contributors if they notice something. I just thought this one was particularly egregious, and I saw it being talked about firsthand.

[chaosvolt]

:>

[VissValdyr]

Interesting error. I made the sandwich revamp not long ago #4456 . Changing the files and recipes generously. I hope there aren't that much other errors for that many new contributiors. 😅