Unit test material checks are now performed on all crafting recipes by default. All stack recipes now transfer mats to the results (#92620)

## About The Pull Request
Extends the part of the crafting unit test that ensures consistency
between the total mats of the components of a recipe (or rather, the
result of said recipe) and a generic instance of the same type as its
result, previously only implemented on food recipes.

## Why It's Good For The Game
This ensures a degree of consistency with the material composition of
various objects in the game. I couldn't do it in the original PR as that
one was too big already and it took months to get it merged, and have
the relative bugs fixed.

Currently a WIP as I slowly deal with the unit test reports.

## Changelog

🆑
refactor: Follow-up to the crafting/material refactor from months ago.
All objects crafted with stacks now inherit their mat composition (not
necessarily the effects and color) by default, while previously only a
few things like chair, sinks and toilets did. Report any object looking
or behaving weirdly as a result.
fix: The material composition of ammo boxes is no longer a 1/10 of what
it's supposed to be. It was a shitty hack to make it harder to recycle
empty ammo boxes. Instead, they lose materials as they're emptied now.
/🆑

code/modules/mining/equipment/explorer_gear.dm

@@ -194,6 +194,7 @@
 	heat_protection = CHEST|GROIN|LEGS|FEET|ARMS
 	max_heat_protection_temperature = SPACE_SUIT_MAX_TEMP_PROTECT
 	resistance_flags = FIRE_PROOF
+	custom_materials = list(/datum/material/bone = SHEET_MATERIAL_AMOUNT * 6)
 
 /obj/item/clothing/suit/armor/bone/Initialize(mapload)
 	. = ..()
@@ -214,6 +215,7 @@
 	max_heat_protection_temperature = SPACE_SUIT_MAX_TEMP_PROTECT
 	armor_type = /datum/armor/hooded_explorer
 	resistance_flags = FIRE_PROOF
+	custom_materials = list(/datum/material/bone = SHEET_MATERIAL_AMOUNT * 4)
 
 /obj/item/clothing/head/helmet/skull/Initialize(mapload)
 	. = ..()

code/modules/mining/equipment/mining_tools.dm

@@ -181,6 +181,7 @@
 	attack_verb_simple = list("slash", "impale", "stab", "slice")
 	sharpness = SHARP_EDGED
 	item_flags = CRUEL_IMPLEMENT
+	custom_materials = list(/datum/material/bone = SHEET_MATERIAL_AMOUNT * 4, /datum/material/iron = SMALL_MATERIAL_AMOUNT * 0.5)
 
 /obj/item/shovel/serrated/Initialize(mapload)
 	. = ..()
@@ -322,6 +323,7 @@
 	item_flags = SLOWS_WHILE_IN_HAND | IMMUTABLE_SLOW
 	slowdown = 3
 	attack_speed = 1.2 SECONDS
+	custom_materials = list(/datum/material/iron = SHEET_MATERIAL_AMOUNT * 6.6, /datum/material/alloy/plasteel = SHEET_MATERIAL_AMOUNT * 5)
 	/// The factor at which the recoil becomes less.
 	var/recoil_factor = 3
 	/// Wether we knock down and launch away out enemies when we attack.