[Feature Request] Improve suggestion for String Literal Types + string-fallback

[Shinigami92]

When we define a type like this, we get full autosuggestion support:

But if we define a type with a fallback to string, we get nothing intelligent:

[RyanCavanaugh]

From the type system's perspective, "red" | "green" | "blue" | string is a fancy way of writing string. The literals are lost. We don't have any mechanism for "A type plus some associated suggestions" nor plans to add one.

[Shinigami92]

But can we make this happen in the future?
It's only a Feature Request and maybe someone in the open source world can bring us this Feature.
It wont break anything but improve VS Code.

Edit: Or is this part of the language service?

[Shinigami92]

Duplicate of #29729