chore: optimize zarm icon export module type

[jinasonlin]

The current Zarm export configuration causes references to resources in the lib instead of es when using the ES module, resulting in failed tree shaking.

exports field is preferred over other package entry fields like main, module, browser or custom ones.

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Name	Status	Preview	Comments	Updated (UTC)
zarm	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 12, 2024 3:44am

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