MM2: minor bugfixes (#4190)

* move special cases to be outside strict

* Update text.py

* fix wily machine edge case, incorrect weapons, and time stopper failsafe

* bump world version

* weakness checking is inclusive

* Update __init__.py

* add air shooter to edge case validation

worlds/mm2/text.py

@@ -1,7 +1,7 @@
 from typing import DefaultDict
 from collections import defaultdict
 
-MM2_WEAPON_ENCODING: DefaultDict[str, int] = defaultdict(lambda x: 0x6F, {
+MM2_WEAPON_ENCODING: DefaultDict[str, int] = defaultdict(lambda: 0x6F, {
     ' ': 0x40,
     'A': 0x41,
     'B': 0x42,