gh-108511: Add C API functions which do not silently ignore errors (GH-109025)

Add the following functions:

* PyObject_HasAttrWithError()
* PyObject_HasAttrStringWithError()
* PyMapping_HasKeyWithError()
* PyMapping_HasKeyStringWithError()

Modules/_xxsubinterpretersmodule.c

@@ -41,7 +41,7 @@ _get_current_interp(void)
 static PyObject *
 add_new_exception(PyObject *mod, const char *name, PyObject *base)
 {
-    assert(!PyObject_HasAttrString(mod, name));
+    assert(!PyObject_HasAttrStringWithError(mod, name));
     PyObject *exctype = PyErr_NewException(name, base, NULL);
     if (exctype == NULL) {
         return NULL;