Playground auto-downloading breaks on other package import

[Dionysusnu]

The package @rbxts/yield-for-tree has the following index.d.ts:

export { EvaluateInstanceTree, yieldForTree, yieldForTree as default } from "@rbxts/validate-tree";

The playground incorrectly assumes that any import/export from another file must be a relative file reference. This breaks for yield-for-tree, when it tries to download https://cdn.jsdelivr.net/npm/@rbxts/yield-for-tree@latest/@rbxts/validate-tree.d.ts.