Fix _locales_to_names: Call str() on the parameter variable instead o…

…f the module object. (#1038)

Co-authored-by: Daniel Trachsel <daniel.trachsel@borm.ch>

babel/support.py

@@ -705,7 +705,7 @@ def _locales_to_names(
     if locales is None:
         return None
     if isinstance(locales, Locale):
-        return [str(locale)]
+        return [str(locales)]
     if isinstance(locales, str):
         return [locales]
     return [str(locale) for locale in locales]