Fix a few more typing issues

jedi/inference/value/instance.py

@@ -189,6 +189,7 @@ class CompiledInstance(AbstractInstanceValue):
 
 class _BaseTreeInstance(AbstractInstanceValue):
     get_defined_names: Any
+    _arguments: Any
 
     @property
     def array_type(self):

jedi/inference/value/iterable.py

@@ -233,7 +233,7 @@ class Sequence(LazyAttributeOverwrite, IterableMixin):
 class _BaseComprehension(ComprehensionMixin):
     def __init__(self, inference_state, defining_context, sync_comp_for_node, entry_node):
         assert sync_comp_for_node.type == 'sync_comp_for'
-        super().__init__(inference_state)
+        super().__init__(inference_state)  # type: ignore[call-arg]
         self._defining_context = defining_context
         self._sync_comp_for_node = sync_comp_for_node
         self._entry_node = entry_node

jedi/inference/value/klass.py

@@ -694,6 +694,9 @@ class ClassValue(ClassMixin, FunctionAndClassBase, metaclass=CachedMetaClass):
         """
         bases_arguments = self._get_bases_arguments()
 
+        if bases_arguments is None:
+            return None
+
         if bases_arguments.argument_node.type != "arglist":
             # If it is not inheriting from the base model and having
             # extra parameters, then init behavior is not changed.