zeroconf: constant-fold a `pycompat.ispy3`
I’ve checked that both bytes and str gets passed as the `name` parameter, so
the rest of the condition is still required. Because there aren’t really any
tests for the extensions, I didn’t want to refactor it to pass a single type.
edition = "2018"
max_width = 79
wrap_comments = true
error_on_line_overflow = true