Better completions for Literals nested inside other types

[multimeric]

Currently pylance correctly makes suggestions for a literal-typed variable:

However, once we nest that literal into a TypedDict, it no longer suggests these:

However if we use the function call syntax, it works again:

Pylance: 2022.7.40
VSCode: 1.69.1

[multimeric]

On further investigation, we do get correct completions, but only after opening the string:

I think it would be preferable for these completions to be shown before this: as soon as the : delimiter is used.

[multimeric]

Also, here is the source code I'm using:

from typing import Literal, TypedDict

class Foo(TypedDict):
    bar: Literal["1", "2", "3"]