Fixed errors displaying IFC Connections for IfcRelConnectsElements

IfcRelConnectsElements type of connection wasn't handled properly resulting in errors.
Now you should be able to see connections for connected slabs, walls etc - https://i.imgur.com/LpFBKBC.png

Traceback:
Traceback (most recent call last):
  File "\blenderbim\bim\module\geometry\ui.py", line 102, in draw
    ConnectionsData.load()
  File "\blenderbim\bim\module\geometry\data.py", line 100, in load
    cls.data = {"connections": cls.connections()}
  File "\blenderbim\bim\module\geometry\data.py", line 134, in connections
    relating_element_connection_type = rel.RelatingConnectionType
  File "\blenderbim\libs\site\packages\ifcopenshell\entity_instance.py", line 171, in __getattr__
    raise AttributeError(
AttributeError: entity instance of type 'IFC4.IfcRelConnectsElements' has no attribute 'RelatingConnectionType'

src/blenderbim/blenderbim/bim/module/geometry/data.py

@@ -111,10 +111,13 @@ def connections(cls):
         for rel in connected_to:
             if element.is_a("IfcDistributionPort"):
                 related_element = rel.RelatedPort
-                related_element_connection_type = ""
             else:
                 related_element = rel.RelatedElement
+
+            if element.is_a("IfcRelConnectsPathElements"):
                 related_element_connection_type = rel.RelatedConnectionType
+            else:
+                related_element_connection_type = ""
 
             results.append(
                 {
@@ -128,10 +131,13 @@ def connections(cls):
         for rel in connected_from:
             if element.is_a("IfcDistributionPort"):
                 relating_element = rel.RelatingPort
-                relating_element_connection_type = ""
             else:
                 relating_element = rel.RelatingElement
+
+            if element.is_a("IfcRelConnectsPathElements"):
                 relating_element_connection_type = rel.RelatingConnectionType
+            else:
+                relating_element_connection_type = ""
 
             results.append(
                 {