fix: sometimes THIS_IS_UNDEFINED warnings were still shown

[yarsky-tgz]

Description

Using current latest (v.2.5.3) vite for building our project i was getting lot of The 'this' keyword is equivalent to 'undefined' at the top level of an ES module, and has been rewritten errors in console.

I've dived into sources, and found that here we have logic for filtering out such warnings, but here no onwarn provided at all.

So I've fixed situation by reusage at node/plugins/worker function onRollupWarning exported from ./node/build.

Using npm pack I've tried it on my side already, and having no more THIS_IS_UNDEFINED warnings at console during building, as expected

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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