Hello! I'm on the same boat as you, where I applied for my OWP at the same time as my PR. I never received any updates on my OWP throughout the process.
I already received my PR card a while ago, so my application is pretty much completed, yet I never heard anything about my OWP.
I believe that they don't automatically cancel and refund the OWP.
I called in to submit my cancellation for the OWP on August 4, 2021 and called again today to see if there was any progress.
The agent said that it can take up to 16 weeks for the request to be reviewed, so it'll take a while to receive the refund.
You can submit a request to withdraw the application, but I don't know how long that would take, since it takes a while for your webform to be read.
I recommend calling IRCC if you want the refund as soon as possible.