Gives all entities the default airlevel on creation (#3942)

* Guardians don't take damage on land
* Squids suffocate on land

src/Entities/Entity.cpp

@@ -56,8 +56,8 @@ cEntity::cEntity(eEntityType a_EntityType, double a_X, double a_Y, double a_Z, d
 	m_TicksSinceLastVoidDamage(0),
 	m_IsSwimming(false),
 	m_IsSubmerged(false),
-	m_AirLevel(0),
-	m_AirTickTimer(0),
+	m_AirLevel(MAX_AIR_LEVEL),
+	m_AirTickTimer(DROWNING_TICKS),
 	m_TicksAlive(0),
 	m_IsTicking(false),
 	m_ParentChunk(nullptr),