Generate release summaries when --no-issues is set to true

Is your feature request related to a problem? Please describe. When running with --no-issues release summary issues are also filtered so we lose the release summary feature.

Describe the solution you'd like I would like release summaries to be generated even when the --no-issues flag is set.

Describe alternatives you've considered I tried using --include-labels=release-summary but it applies that filter to pull requests as well. We want all pull requests included regardless of labels. PRs and Issues share labels like bug so we can't specify a broader list without bringing issues back into the changelog.

Additional context Essentially we do not want any issues in the changelog, just closed PRs, but we do want to retain the release summaries.