fix(astro): Astro.url.pathname returns a wrong file extension

[avilyre]

Changes

• Astro.url.pathname returns value with the correct file .html extension when build.format: 'perserve' is enabled in astro.config.mjs

Closes: #13615

Testing

Here's the screenshot after change:
build.format: 'preserve' is enabled in all screenshot

For routeType: 'page' with a named pathname. Now we have .html extension in pathname property

For routeType: 'page' without a named pathname (no change)

For routeType: 'endpoint' (no change)

Docs

I am not sure, but I think it is not needed.

[changeset-bot]

🦋 Changeset detected

Latest commit: fdc8251

The changes in this PR will be included in the next version bump.

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[github-actions]

This PR is blocked because it contains a minor changeset. A reviewer will merge this at the next release if approved.

[codspeed-hq]

CodSpeed Performance Report

Merging #14410 will not alter performance

_{Comparing avilyre:fix/astro-url-pathname-returns-wrong-extension (fdc8251) with main (ad26fa2)}

Summary

✅ 6 untouched