Release: Prerelease 8.5.0-beta.2

[github-actions]

This is an automated pull request that bumps the version from 8.5.0-beta.1 to 8.5.0-beta.2.
Once this pull request is merged, it will trigger a new release of version 8.5.0-beta.2.
If you're not a core maintainer with permissions to release you can ignore this pull request.

To do

Before merging the PR, there are a few QA steps to go through:

• Add the "freeze" label to this PR, to ensure it doesn't get automatically forced pushed by new changes.
• Add the "ci:daily" label to this PR, to trigger the full test suite to run on this PR.

And for each change below:

1. Ensure the change is appropriate for the version bump. E.g. patch release should only contain patches, not new or de-stabilizing features. If a change is not appropriate, revert the PR.
2. Ensure the PR is labeled correctly with one of: "BREAKING CHANGE", "feature request", "bug", "maintenance", "dependencies", "documentation", "build", "unknown".
3. Ensure the PR title is correct, and follows the format "[Area]: [Summary]", e.g. "React: Fix hooks in CSF3 render functions". If it is not correct, change the title in the PR.
   • Areas include: React, Vue, Core, Docs, Controls, etc.
   • First word of summary indicates the type: “Add”, “Fix”, “Upgrade”, etc.
   • The entire title should fit on a line

This is a list of all the PRs merged and commits pushed directly to next, that will be part of this release:

• 🐛 Bug: Addon Test: Improve error message on missing coverage package #30088
• 🐛 Bug: Addon Test: Clear coverage data when starting or watching #30072
• 🐛 Bug: UI: Keep failing stories in the sidebar, disregarding filters #30086
• 🐛 Bug: UI: Fix test provider event handling on startup #30083
• ⚠️ Direct commit: Fix default story tags e4bfa52970f70ee22b0cb0c5f2bc777f56747f6c
• 🏗️ Build: Test: E2E tests for new Component Testing features #29826

If you've made any changes doing the above QA (change PR titles, revert PRs), manually trigger a re-generation of this PR with this workflow and wait for it to finish. It will wipe your progress in this to do, which is expected.

Feel free to manually commit any changes necessary to this branch after you've done the last re-generation, following the Make Manual Changes section in the docs, especially if you're making changes to the changelog.

When everything above is done:

• Merge this PR
• Follow the run of the publish action

---

Generated changelog

8.5.0-beta.2

• Addon Test: Clear coverage data when starting or watching - #30072, thanks @ghengeveld!
• Addon Test: Improve error message on missing coverage package - #30088, thanks @JReinhold!
• UI: Fix test provider event handling on startup - #30083, thanks @ghengeveld!
• UI: Keep failing stories in the sidebar, disregarding filters - #30086, thanks @JReinhold!

Greptile Summary

Based on the PR details and changed files, I'll provide a concise summary of the changes in this prerelease version bump from 8.5.0-beta.1 to 8.5.0-beta.2.

Added and improved testing functionality in Storybook, focusing on coverage reporting, error handling, and UI improvements.

Key changes:

• Added coverage data clearing when starting/watching tests to prevent stale data
• Improved error messaging for missing coverage packages with clearer installation instructions
• Fixed test provider event handling on startup to prevent stuck "pending" states
• Modified sidebar to keep failing stories visible regardless of applied filters
• Added E2E tests for new component testing features including coverage reporting

The changes are appropriate for a beta release as they focus on bug fixes and testing improvements without introducing breaking changes. The PR titles are correctly formatted and labeled appropriately.

This summary will replace any previous ones since this is a new version bump PR.

[greptile-apps]

LGTM

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