Not quite, it's causing someone to commit a crime they wouldn't ordinarily commit, so it all depends how pushy they were about it. If you could argue they coerced the contractors into doing the work, that's entrapment. But inviting them over under false pretenses and then simply asking them to commit a crime, while of questionable value to the community, isn't entrapment.

a few illustrated examples of what does and does not qualify as entrapment:

https://lawcomic.net/guide/?p=633

No. There's some sort of legal sophistry that helps them get away with it, and even if there weren't there's always the fall back of qualified immunity.

Entrapment is a defense not an offense, thus immunities on the part of the putative entrapper are immaterial.