fix(hmr): normalize the path info

[btea]

Description

Additional context

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What is the purpose of this pull request?

• [ ] Bug fix
• [ ] New Feature
• [ ] Documentation update
• [ ] Other

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• [ ] Read the Contributing Guidelines.
• [ ] Read the Pull Request Guidelines and follow the PR Title Convention.
• [ ] Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• [ ] Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• [ ] Ideally, include relevant tests that fail without this PR but pass with it.

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[btea]

Before the modification, the slash was reversed, as shown in the figure below:

After modification, as shown in the figure below:

[bluwy]

Yeah I'm not really sure if there's a significant benefit for that. We also use path.relative without normalizing in a few places, and I think the pattern is that if it's referencing an actual filesystem path, then we keep the backslash. If it's referencing a Rollup-style path, then we normalize it.

[btea]

Oh, I see what you mean, thanks for the clarification.