Several valid biome strings in filters flagging as warning in spawn_rules json files

[qmagnet]

String values used in has_biome_tag filters in spawn_rules json files are being flagged as incorrect, though they are valid

Examples:
nether_wastes unrecognized
pale_garden unrecognized
mooshroom_island unrecognized, presumedly looking for mushroom_island which does not work in game (see mooshroom spawn_rules json file)