fix(test-runner-coverage-v8): #2825 ignore invalid URLs

[miyasudokoro]

What I did

1. In test-runner-coverage-v8 index.ts v8ToIstanbul, it now ignores V8Coverage entry.url that are not valid URLs. I did not use URL.canParse because @web/root has engines node: >=18.0.0.
2. I moved the try-catch to surround the entire if-statement as an extra precaution for future issues.

[changeset-bot]

🦋 Changeset detected

Latest commit: dcce65d

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

This PR includes changesets to release 1 package

Name	Type
@web/test-runner-coverage-v8	Patch

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[miyasudokoro]

Just giving this a bump because I really do need it to be adopted.