Move recommendation of resourceFactory to better align with how TypeScript works

[NullVoxPopuli]

This also makes migrating away from resourceFactory easier once starbeam/formal resource support lands.

However, codemod tools for that migration will still need to support both usages.

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Name	Status	Preview	Comments	Updated (UTC)
ember-resources	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 11, 2024 8:20pm

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Estimated impact to a consuming app, depending on which bundle is imported

	js	min	min + gzip	min + brotli
/index.js	14.06 kB	2.23 kB	971 B	807 B