fix: handle more yarn pnp load errors

[sapphi-red]

Description

Yarn returns C: from pnp.resolveToUnqualified even if C:\\package.json doesn't exist and therefore loadPackageData was throwing no such file or directory, open 'C:\package.json'.

fixes #13158

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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