Pamhyr: Fix tests and update adists obj id management.

src/Model/Pollutants/Pollutants.py

@@ -35,16 +35,15 @@ class Pollutants(SQLSubModel):
     _sub_classes = []
     _id_cnt = 0
 
-    def __init__(self, id: int = -1, name: str = "",  status=None):
-        super(Pollutants, self).__init__()
+    def __init__(self, id: int = -1, name: str = "",
+                 status=None,
+                 owner_scenario=-1):
+        super(Pollutants, self).__init__(
+            id=id, status=status,
+            owner_scenario=owner_scenario)
 
         self._status = status
 
-        if id == -1:
-            self.id = Pollutants._id_cnt
-        else:
-            self.id = id
-
         if name is None or name == "":
             self.name = f"pol{self.id}"
         else: