fix(plugin-react): set this-is-undefined-in-esm to silent if classic runtime (fixes #8644)

[sapphi-red]

Description

For automatic runtime it was fixed upstream (evanw/esbuild@0905d85).
But for classic runtime it still happens (evanw/esbuild#2328 (comment)).

This PR sets esbuild.logOverride['this-is-undefined-in-esm'] = 'silent' automatically when classic runtime is used.

This PR only works with esbuild 0.14.42+.
Vite 3.0.0-alpha.11+ requires 0.14.43 so it is safe.

vite/packages/vite/package.json

Line 60 in afe88ff

"esbuild": "^0.14.43",

fixes #8644

Additional context

related: evanw/esbuild#2328

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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