Creating a pre-release version when following trunk based approach

Thanks for stopping by to ask us a question! Please make sure to include:
- What you're trying to do
I am using trunk based branching strategy, and would like to have a pre-release version created. But release-please always have a 1.1.0. I have deleted the original release 1.0.0 to restart from a pre-release but it always bumps the minor number.

- What code you've already tried
My release-please config is located here:
https://github.com/joepaulk/release-please-demo/blob/main/release-please-config.json

- Any error messages you're getting
There is no error message. Here is my release-please action runs log: https://github.com/joepaulk/release-please-demo/actions/runs/17751515424/job/50447112544

Thank you in advance for your time.