delete-only-pre-release-versions: true tag as well as ignore-versions params is not working

[sagarc05]

As part of our github action, we have set the delete-only-pre-release-versions tag as true. However the package is not able to differentiate between release and pre-release. Even the release packages are getting deleted.
Our semver for the release package is like 1.12.0. I noticed that in the code it matches with regex ^(0|[1-9]\d*)((\.(0|[1-9]\d*))*)$.
Even then it's deleting all the packages.
action file:
package-name: 'abc'
package-type: 'container'
token: ${{ secrets.GITHUB_TOKEN }}
min-versions-to-keep: 8
delete-only-pre-release-versions: true

We also tried setting ignore versions explicitly. However, its still deletes the packages.
action file:
package-name: 'abc'
package-type: 'container'
token: ${{ secrets.GITHUB_TOKEN }}
min-versions-to-keep: 8
ignore-versions: '^(0|[1-9]\d*)((\.(0|[1-9]\d*))*)$'

[VitaSokolova]

In my case it refuses deleting anything at all:

jobs:
  cleanup:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    env:
      TOKEN: ${{ secrets.TOKEN }}
    steps:
      - name: Delete Oldest Package Versions
        uses: actions/delete-package-versions@v4
        with:
          package-name: 'xxx'
          package-type: 'maven'
          min-versions-to-keep: 5
          delete-only-pre-release-versions: 'true'  <---- without this line old packages were deleted
          token: ${{ env.TOKEN }}

[rlaveycal]

See #88

The code currently filters on "name", which for packages is the version but for containers is the SHA...so nothing matches the ignore regex and everything is deleted