Snap height only if on ground

(Original commit 2dc6ab453f931ac2083a6d142e963beb0a101b94)

connector/src/main/java/org/geysermc/connector/network/translators/bedrock/BedrockMovePlayerTranslator.java

@@ -62,7 +62,8 @@ public class BedrockMovePlayerTranslator extends PacketTranslator<MovePlayerPack
             return;
         }
 
-        double javaY = Math.ceil((packet.getPosition().getY() - EntityType.PLAYER.getOffset()) * 2) / 2;
+        double javaY = packet.getPosition().getY() - EntityType.PLAYER.getOffset();
+        if (packet.isOnGround()) javaY = Math.ceil(javaY * 2) / 2;
         ClientPlayerPositionRotationPacket playerPositionRotationPacket = new ClientPlayerPositionRotationPacket(
                 packet.isOnGround(), GenericMath.round(packet.getPosition().getX(), 4), javaY, GenericMath.round(packet.getPosition().getZ(), 4), packet.getRotation().getY(), packet.getRotation().getX()
         );