Once again Im dumb… smfh…
probe.cubeTexture.render() did it…
Buuuuuut now I gotta figure out why the skybox is not rendering in the output.
UPDATE
because the cubeMap texture loading is async… duhhhhh, ok now I just gotta figure out why isReady and isBlocking are not the params to look at to see if the cubeMap has loaded or not.
So if you go into the inspector and check the textures out you will see the probe did not see the skyTexture even though it was flagged as ready.
Then here is when you hold it for one second then do it instead of checking for it to be ready. Which depending on how fast the texture loaded should be seen by the probe now.