Add disable_jump to liquids and ladders (#7688)

Remove second nodedef check by improving the colliding node detection
Also remove the 2nd check in old_move, correct standing node a bit

src/client/localplayer.h

@@ -183,6 +183,7 @@ private:
 	// ***** End of variables for temporary option *****
 
 	bool m_can_jump = false;
+	bool m_disable_jump = false;
 	u16 m_breath = PLAYER_MAX_BREATH_DEFAULT;
 	f32 m_yaw = 0.0f;
 	f32 m_pitch = 0.0f;