[Fix] Scenario Review Status + Depth issues (#351)

https://envipath.org/api/legacy/package/32de3cf4-e3e6-4168-956e-32fa5ddb0ce1/pathway/1d537657-298c-496b-9e6f-2bec0cbe0678

-> Node.depth can be float for Dummynodes
-> Scenarios in Edge.d3_json were lacking a reviewed flag

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#351

epdb/legacy_api.py

@@ -94,6 +94,8 @@ class SimpleObject(Schema):
             return "reviewed" if obj.compound.package.reviewed else "unreviewed"
         elif isinstance(obj, Node) or isinstance(obj, Edge):
             return "reviewed" if obj.pathway.package.reviewed else "unreviewed"
+        elif isinstance(obj, dict) and "review_status" in obj:
+            return "reviewed" if obj.get("review_status") else "unreviewed"
         else:
             raise ValueError("Object has no package")
 
@@ -1464,7 +1466,7 @@ class PathwayEdge(Schema):
 
 class PathwayNode(Schema):
     atomCount: int = Field(None, alias="atom_count")
-    depth: int = Field(None, alias="depth")
+    depth: float = Field(None, alias="depth")
     dt50s: List[Dict[str, str]] = Field([], alias="dt50s")
     engineeredIntermediate: bool = Field(None, alias="engineered_intermediate")
     id: str = Field(None, alias="url")
@@ -1805,7 +1807,7 @@ class EdgeSchema(Schema):
     startNodes: List["EdgeNode"] = Field([], alias="start_nodes")
 
     @staticmethod
-    def resolve_review_status(obj: Node):
+    def resolve_review_status(obj: Edge):
         return "reviewed" if obj.pathway.package.reviewed else "unreviewed"