feat: skip hmr when script is merely formatted

[haoqunjiang]

Description

This PR adds a check for the updated script's AST during HMR so that if the AST contains merely location or comment changes, the script would be excluded from affectedModules (thus skipping HMR).

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.
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• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
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