Added new OW Crossed option None (Allowed) to support legacy functionality of when invalid values are used

resources/app/cli/args.json

@@ -119,6 +119,7 @@
   "ow_crossed": {
     "choices": [
       "none",
+      "allowed",
       "polar",
       "grouped",
       "limited",

resources/app/cli/lang/en.json

@@ -208,6 +208,7 @@
     "ow_crossed": [
       "This allows cross-world connections to occur on the overworld.",
       "None:           No transitions are cross-world connections.",
+      "Allowed:        Only entrances/whirlpools can end up cross-world.",
       "Polar:          Only used when Mixed is enabled. This retains original",
       "                connections even when overworld tiles are swapped.",
       "Limited:        Exactly nine transitions are randomly chosen as",