Include list of removed prereleases in cleanup notice

[MariusStorhaug]

Context

The Publish-PSModule workflow includes a prerelease cleanup step that removes old prerelease versions after a stable release. The cleanup notice currently only shows the count of removed prereleases, not which specific versions were removed.

Request

When prerelease versions are cleaned up during the publish workflow, the notice displays only a count:

Cleaned up 7 prerelease(s) for [caketest].

There is no visibility into which specific prerelease versions were removed. This makes it difficult to audit or debug if a prerelease was removed unexpectedly.

What is expected

The cleanup notice should list the specific prerelease versions that were removed:

Cleaned up 7 prerelease(s) for [caketest]:
- 0.1.0-preview.1
- 0.1.0-preview.2
- 0.1.0-preview.3
- 0.2.0-alpha.1
- 0.2.0-alpha.2
- 0.2.0-beta.1
- 0.2.0-beta.2

Acceptance criteria

• The cleanup notice includes the list of removed prerelease version strings
• The notice remains readable even when many prereleases are removed
• Existing cleanup behavior is not affected

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Technical decisions

To be determined during implementation planning.

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Implementation plan

• Identify the cleanup logic in Publish-PSModule that generates the notice
• Collect the list of prerelease version strings being removed
• Update the notice to include the version list alongside the count
• Verify notice output format in a test run

[MariusStorhaug]

Restructured issue description into the standard three-section format.

• Rewrote context and request to separate user-facing behavior from implementation details
• Added acceptance criteria
• Added placeholder technical decisions section
• Created implementation plan with 4 tasks
• Applied Patch label