Normalize yaw for set_spawn() location argument

Upon upgrading to 1.21.9+, Minecraft will fail to convert spawn data with a spawn angle not normalized from -180 to 180, and will instead set spawn data (including coordinates) to zeroes. This only affects worlds that were set with a yaw above 180 using the new location array format added to set_spawn() in August.

Author: PseudoKnight

src/main/java/com/laytonsmith/abstraction/bukkit/BukkitMCWorld.java

@@ -511,7 +511,9 @@ public void setSpawnLocation(int x, int y, int z) {
 
 	@Override
 	public void setSpawnLocation(MCLocation location) {
-		w.setSpawnLocation((Location) location.getHandle());
+		Location loc = (Location) location.getHandle();
+		loc.setYaw(Location.normalizeYaw(loc.getYaw()));
+		w.setSpawnLocation(loc);
 	}
 
 	@Override