Fix #20745: Don't silence TypeError raised inside templates.

Thanks to robin for the report and claudep for the review.

tests/template_tests/tests.py

@@ -98,6 +98,9 @@ class SomeClass:
     def method4(self):
         raise SomeOtherException
 
+    def method5(self):
+        raise TypeError
+
     def __getitem__(self, key):
         if key == 'silent_fail_key':
             raise SomeException
@@ -680,6 +683,9 @@ class TemplateTests(TransRealMixin, TestCase):
             # Fail silently when accessing a non-simple method
             'basic-syntax20': ("{{ var.method2 }}", {"var": SomeClass()}, ("","INVALID")),
 
+            # Don't silence a TypeError if it was raised inside a callable
+            'basic-syntax20b': ("{{ var.method5 }}", {"var": SomeClass()}, TypeError),
+
             # Don't get confused when parsing something that is almost, but not
             # quite, a template tag.
             'basic-syntax21': ("a {{ moo %} b", {}, "a {{ moo %} b"),