Fixing mini nuke and MIRV stuff still using legacy item

[Shibva]

• Attempted todo the bit that Bob does for naming stuff (and likely failing in the process)

NOTE: these fixes were made on the assumption that that the names of the items in the code are regex and therefore changing the string should do the trick; yay reasoning

• Updated Structure Loot Tables to have the normal Mini Nuke and MIRV variant instead of the obsolete LEGACY version that does jack shit
• Updated the ammo container with the same exact thing stated above (seriously, the ammo for the normal clips got changed but not the "universal ammo clip"? how did that happen)

Sidenote: by Normal I am referring to the standard version of the ammo, NOT the low yield, high yield nor the safe (and pumpkin for the mini) one. Change if needed

[Shibva]

Addendum: recipes for transforming the focused legacy items does not exist and the legacy version ammo still has recipes to make them for whatever reason; I would remove them but I'm not confident enough in me doing that without breaking shit