fix(config): resolve dynamic import as esm

[bluwy]

Description

When calling tryNodeResolve when bundling the config, make sure the isRequire option depends on whether the import is a dynamic import or not.

Dynamic imports uses the import exports condition when resolving in Node. So isRequire should be false for that even in vite.config.cjs.

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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[dominikg]

this is needed to be able to use esm only plugins from cjs with dynamic import, see tests failing for vite-plugin-svelte 2.0 beta https://github.com/sveltejs/vite-plugin-svelte/actions/runs/3629407996