refactor(resolve): remove deep import syntax handling

[bluwy]

Description

Remove foo > bar import handling in tryNodeResolve. This syntax is unique to optimizeDeps.include only, so this PR moves the handling there.

This doesn't improve performance (maybe a tiny bit), but it should make the code more readable.

Additional context

This non-standard stuff was added in one of my first PRs 😬 Time to clean it up.

Existing tests should pass. Running vite-plugin-svelte's test should help too, although we only have one test that covers this, as the plugin had moved to an esbuild plugin approach.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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