Eanble abi3_inheritance test again

Author: mejrs

tests/test_compile_error.rs

@@ -79,7 +79,7 @@ fn test_compile_errors() {
     t.pass("tests/ui/pymodule_missing_docs.rs");
     #[cfg(not(any(Py_LIMITED_API, feature = "experimental-inspect")))]
     t.pass("tests/ui/forbid_unsafe.rs");
-    #[cfg(all(Py_LIMITED_API, not(Py_3_12), not(feature = "experimental-async")))]
+    #[cfg(all(Py_LIMITED_API, not(Py_3_12), feature = "experimental-async"))]
     // output changes with async feature
     t.compile_fail("tests/ui/abi3_inheritance.rs");
     #[cfg(all(Py_LIMITED_API, not(Py_3_9)))]

tests/ui/abi3_inheritance.stderr

@@ -6,7 +6,7 @@ error[E0277]: pyclass `PyException` cannot be subclassed
   |
   = help: the trait `PyClassBaseType` is not implemented for `PyException`
   = note: `PyException` must have `#[pyclass(subclass)]` to be eligible for subclassing
-  = note: with the `abi3` feature enabled, PyO3 does not support subclassing native types
+  = note: subclassing native types requires Python >= 3.12 when using the `abi3` feature
 help: the trait `PyClassBaseType` is implemented for `PyAny`
  --> src/types/any.rs
   |
@@ -22,7 +22,7 @@ error[E0277]: pyclass `PyException` cannot be subclassed
   |
   = help: the trait `PyClassBaseType` is not implemented for `PyException`
   = note: `PyException` must have `#[pyclass(subclass)]` to be eligible for subclassing
-  = note: with the `abi3` feature enabled, PyO3 does not support subclassing native types
+  = note: "subclassing native types requires Python >= 3.12 when using the `abi3` feature",
 help: the trait `PyClassBaseType` is implemented for `PyAny`
  --> src/types/any.rs
   |