The section referring to the shoplifting mentions specifically all employers. So that would include anyone.

There is a very important note though. There was an update to the line to include dedicated safety personnel when it comes to dealing with suspected shoplifters or active shooter:

(12) Provisions prohibiting the employer from maintaining policies that require employees who are not dedicated safety personnel to confront active shooters or suspected shoplifters.

I imagine that this is mostly to keep safely in mind without forcing standard employees into action. Being a dedicated safety personnel most likely applies to positions like a school body guard that isn’t a police officer or someone handling security for something like an armored truck. Someone who is working as dedicated safety personnel could get fired for failing to act. A regular employee would not be fired in the same situation: at the very least legally speaking.