fix: Fix label generation for StateTransition factory

The whole label text can be retrieved from the value behind the `name`
attribute on the `diag_element`.

Author: ewuerger

capellambse/aird/_edge_factories.py

@@ -470,17 +470,7 @@ def state_transition_factory(seb: C.SemanticElementBuilder) -> diagram.Edge:
     """
     edge = generic_factory(seb)
     if edge.labels:  # pragma: no branch
-        triggers = seb.melodyloader.follow_links(
-            seb.melodyobjs[0], seb.melodyobjs[0].get("triggers", "")
-        )
-        label = ", ".join(
-            i.get("name", "(unnamed trigger)")
-            for i in triggers
-            if i is not None
-        )
-
-        if guard := _guard_condition(seb, "guard"):
-            label = f"{label} [{guard}]"
+        label = seb.diag_element.get("name", "")
 
         effects = seb.melodyloader.follow_links(
             seb.melodyobjs[0], seb.melodyobjs[0].get("effect", "")