fix: fall back to importing dynamic dependencies relative to SvelteKit package

[dummdidumm]

Simplifies code a bit around usage locations in our own code, and solves some issues people may have with their setups closes #11578

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Latest commit: 2609235

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[sunrabbit123]

That's a good PR.
I'm a user who wants this PR to work and yarn pnp to work.

However, I'm just sad that there hasn't been an update on this recently.

[sunrabbit123]

By the way

How about focusing logic on the try syntax?

Suggested change

	return await import(resolved);
	return await import(resolved).catch(() => import(dependency));