[Animator] Stop stepping if the action throws an error

[stormwatch]

Please don't merge this yet. I'd like to take this opportunity to ask a couple of things:

1. Would this be a sensible way to handle errors in Animator >> step?
2. How can I avoid the huge and meaningless diff when saving a package in Cuis? How do you usually deal with it? Just edit the .pck file directly and avoid saving in Cuis?

Thanks in advance

[KenDickey]

Ezequiel, Finally finding time to look at this. Can you email me the package file to view? It is taking ~5 minutes to send an email!?! https://arstechnica.com/ai/2025/03/devs-say-ai-crawlers-dominate-traffic-forcing-blocks-on-entire-countries/ !#$%@$%^@$^% mumble. In Hope, -KenD