Fix clearing cached properties when 'auth' or 'filterAuth' are updated

This makes sure the init function isn't slower, and checking for changes
is more robust this way. Also support camelCase schema attributes.
Finally, improved the logging message too.

src/schematools/types.py

@@ -210,18 +210,24 @@ def __deepcopy__(self, memo):
     def __repr__(self) -> str:
         return f"{self.__class__.__name__}({self.data!r})"
 
+    def __init__(self, *args, **kwargs):
+        self.__initialized = False
+        super().__init__(*args, **kwargs)
+        self.__initialized = True
+
     def __setitem__(self, key, value):
         """Check for changes to the dictionary data. Note this is also called on __init__()."""
-        if key == "auth" and key in self.data:
-            logger.warning("auth field is patched by tests")
+        if self.__initialized:
+            logger.info("patching '%s' on %r id %d", key, self, id(self))
+            property_name = to_snake_case(key)  # filterAuth / filter_auth
+            if (
+                property_name in self.__dict__
+                and (prop := getattr(self.__class__, property_name, None)) is not None
+                and isinstance(prop, cached_property)
+            ):
+                # Clear the @cached_property cache value
+                del self.__dict__[property_name]
 
-        if (
-            key in self.__dict__
-            and (prop := getattr(self.__class__, key, None)) is not None
-            and isinstance(prop, cached_property)
-        ):
-            # Clear the @cached_property cache value
-            del self.__dict__[key]
         super().__setitem__(key, value)
 
     if IS_DEBUGGER: