Fix crash when __init__ is assigned to

Fixes #488

Author: AWhetter

autoapi/_objects.py

@@ -506,6 +506,9 @@ def classes(self):
     def constructor(self):
         for child in self.children:
             if child.short_name == "__init__":
+                if not child.type == "method":
+                    break
+
                 return child
 
         return None

docs/changes/488.bugfix.rst

@@ -0,0 +1 @@
+Fix crash when __init__ is assigned to

tests/python/pyexample/example/example.py

@@ -158,6 +158,10 @@ class Two(One):
     """Two."""
 
 
+class Three:
+    __init__ = Two.__init__
+
+
 def fn_with_long_sig(
     this,
     *,