Parameter `--force` doesn't have any effect in command `func new`

The command `func new` asks for consent to override an existing function with the same name by providing the `--force` flag. The flag doesn't have any effect, though.

The `--force` flag in `func init` works like expected.

I'm running version `4.0.3971`.

Start by reproducing the behavior of `func new` with an existing function and the `--force` flag, then compare it with the working `--force` behavior in `func init`. Done means `func new --force` overrides the existing function without prompting or failing, while the non-forced command retains its consent behavior.

Written by the indexing model from the issue text.