Change polyfill

[captbaritone]

There's some strange interaction between the setImmediate polyfill import in jszip and the way rollup-plugin-polyfill-node handles polyfills https://github.com/FredKSchott/rollup-plugin-polyfill-node/blob/main/src/index.ts#L64 that leads jszip's polyfill to get removed and rollup-plugin-polyfill-node's to not get included.

Trying to see if this older implementation works.

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[github-actions]

Size Change: +1.67 kB (+0.35%)

Total Size: 471 kB

Filename	Size	Change
./packages/webamp/built/webamp.bundle.min.js	292 kB	+1.67 kB (+0.57%)

ℹ️ View Unchanged

Filename	Size
./packages/webamp/built/webamp.lazy-bundle.min.js	179 kB

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