fixup toolchain versino setting

Author: aignas

python/private/py_toolchain_suite.bzl

@@ -68,13 +68,13 @@ def py_toolchain_suite(*, prefix, user_repository_name, python_version, set_pyth
         target_settings = [prefix + "_version_setting"]
     elif set_python_version_constraint == "False":
         native.config_setting(
-            name = prefix + "_version_setting",
+            name = prefix + "_version_setting_default",
             flag_values = flag_values | {
                 Label("//python/config_settings:python_version"): "",
             },
             visibility = ["//visibility:private"],
         )
-        target_settings = [prefix + "_version_setting"]
+        target_settings = [prefix + "_version_setting_default"]
     else:
         fail(("Invalid set_python_version_constraint value: got {} {}, wanted " +
               "either the string 'True' or the string 'False'; " +