Food items should now pass down their intrinsic food materials during crafting (#91808)

## About The Pull Request

![image](https://github.com/user-attachments/assets/3bf777fc-2636-4b7d-8fef-dab10723e937)
Food items pass down their intrinsic materials during crafting, which
should prevent foods being crafted from meat being red and squishy. The
implementation might be too broad or kinda suck but it worked for the
problem items I tested it on (headcheese, crispy breaded headcheese,
moussaka, ballpark tsukune).

Also properly sets up `material_flags` to be a bitflag when viewing
variables.

## Why It's Good For The Game
Makes intrinsic food materials actually do what they're supposed to do
(prevent food being crafted with meat from being weirdly too meaty).

## Changelog

🆑
code: Materials bitflags should now show the bitflag interface in VV.
fix: Food items now pass down their intrinsic materials during
crafting/processing/microwaving/etc. etc.
/🆑

Co-authored-by: Hatterhat <Hatterhat@users.noreply.github.com>

code/datums/components/bakeable.dm

@@ -79,6 +79,10 @@
 		original_object.reagents.trans_to(baked_result, original_object.reagents.total_volume)
 		if(added_reagents) // Add any new reagents that should be added
 			baked_result.reagents.add_reagent_list(added_reagents)
+		if(istype(original_object, /obj/item/food) && istype(baked_result, /obj/item/food))
+			var/obj/item/food/original_food = original_object
+			var/obj/item/food/baked_food = baked_result
+			LAZYADD(baked_food.intrinsic_food_materials, original_food.intrinsic_food_materials)
 
 	if(who_baked_us)
 		ADD_TRAIT(baked_result, TRAIT_FOOD_CHEF_MADE, who_baked_us)