test: change server type for vite 5 change

[sapphi-red]

Description

Make testPage function to accept http.Server | Http2SecureServer instead of http.Server.

Motivation and Context

This PR fixes the type incompatibility with Vite 5.

related: https://github.com/vitejs/vite/pull/14834

Screenshots (if appropriate):

Checklist:

• [ ] I have updated/added documentation affected by my changes.
• [ ] I have added tests to cover my changes.

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 282894784fb8171c2c7d4afe10c7ef4ae5ce3ea7

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[linux-foundation-easycla[bot]]

The committers listed above are authorized under a signed CLA.

• :white_check_mark: login: sapphi-red / name: 翠 / green (282894784fb8171c2c7d4afe10c7ef4ae5ce3ea7)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (978db3f) 76.53% compared to head (2828947) 76.53%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #93 +/- ## ======================================= Coverage 76.53% 76.53% ======================================= Files 9 9 Lines 537 537 Branches 120 120 ======================================= Hits 411 411 Misses 81 81 Partials 45 45 ```

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