More than two years after ChatGPT’s public debut kicked off an artificial intelligence mania, the American workforce is largely unenthusiastic about AI on the job and not finding much use for the technology. About 80 percent of Americans generally don’t use AI at work, and the ones who do aren’t bowled over by its benefits, according to the Pew Research Center’s first in-depth survey of AI in the workplace released on Tuesday.Subscribe to The Post Most newsletter for the most important and inter