fix: prebundle dep with colon

[bluwy]

Description

Fixes #6729
Closes #6364 (supersedes)

When importing a package like node:url (aliased to a browser-safe package), handle the colon when flattening the id.

Additional context

With aliases, technically the import path could be anything that needs to be escaped, but colon only for now sounds fine to be strict.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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[tance77]

I'm not sure if it's my environment but this doesn't seem to fix the issue in an Electron environment.

version: "vite": "^2.8.5",

Still getting an error when trying to import something using the node: protocol

'fileURLToPath' is not exported by __vite-browser-external:node:url

[Niputi]

@tance77 vite don't support node builtins as they don't exist in the browser and is not part of the esm specification unless polyfilled or externalized.
you can take a look at vite electron templates at vite-awesome repository or take a look at #native in our discord server where there's previous discussions about this topic