fix environment populated detection

fixes #23764

(cherry picked from commit 27185f44b0)

lib/ansible/plugins/action/raw.py

@@ -27,7 +27,7 @@ class ActionModule(ActionBase):
         if task_vars is None:
             task_vars = dict()
 
-        if self._task.environment:
+        if self._task.environment and any(self._task.environment) :
             self._display.warning('raw module does not support the environment keyword')
 
         result = super(ActionModule, self).run(tmp, task_vars)