lib.Types: Read __abstractmethods__ via getattr()

LoadTypes._classes() reads the __abstractmethods__ attribute of each class
that inspect.getmembers() returns for its debug output. mypy 2.2.0 allows
this, mypy 2.3.1 doesn't: It now types those classes as type[object]
instead of Any. The attribute itself is only declared on the ABCMeta
metaclass, so the direct access fails the type check.

Read the attribute through getattr() with an 'unknown' fallback string, and
annotate the variable explicitly. The runtime behavior is unchanged, since
the attribute exists whenever inspect.isabstract() is true, and the call
satisfies the checker.

Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.84.2
Signed-off-by: user.email <jan@janware.com>

src/python/jw/pkg/lib/Types.py

@@ -102,7 +102,10 @@ class LoadTypes(Types[T]):  # export
                         self._debug(f'o "{name}" has wrong name')
                         continue
                     if inspect.isabstract(c):
-                        self._debug(f'o "{name}" is abstract: {c.__abstractmethods__}')
+                        abstract: frozenset[str] = getattr(
+                            c, '__abstractmethods__', frozenset()
+                        )
+                        self._debug(f'o "{name}" is abstract: {abstract}')
                         continue
                     if self.__type_filter:
                         for tp in self.__type_filter: