Feature request: Add completion support for literals

[michaelfortunato]

Describe the feature

When passing a argument that takes a Literal["x","y","z"], it would be nice if Pyrefly could offer a completion for these options.

For instance, it would be nice if Pyrefly could offer the completion for "foo" here.

FYI the completion it offers currently is incorrectly.

1. The offer:

2. On expansion:

Sandbox Link

https://pyrefly.org/sandbox/?project=N4IgZglgNgpgziAXKOBDAdgEwEYHsAeAdAA4CeSIAxAAQDqMUAxrgLYzUAuunAFuwAqkATjDBRS1AMoYcBADS8IcakuqpqxVAHMYAHXQ0A7nxHVSuAK7VGGaoaEQOMBXB6pTM6rHfo1eCxycpMQQ6FoqvoIcPLjohPqUCdQAEjAeHtaWxLDUYDCoHBYiyrhgispoWHj4iEkAtNQA4jCBIqhQdRwQbEHE7Ix8jADWoeF5MDiow-XUAKpw7CIAbvlQAPocwTAAFACUnNyhcH2MgaF5QiKYvfAzMPh9DmzogYaOPLzsAJIAIgCiuXyhWKvAKdnYcAsxGIuCEgW2MEIWkIagCuGYLGyLWc1C0uE6%2BMwolCjggsQUMRWQgULUYuxmtAcTjUWGoQgskVI0VimSJ1EwEBEp3EETMliE1GwQlwhgWQn0%2BjA0pYvVGKkxsMCACpFcrqAFoMpujC4blYSwCmt0BYWNg0gqsKJOPAONsatQADKONLtADaunAuFwAYUAew7gDAF1drVfGyWkVfPgHTRlqsNls7NAoBppZgLIx2OpNn1qGlpRLomCnFAoMpzFZouwSwJhKIRW44EkMcQAhMzZW%2BPHgb5tqFytZUAsXBwhPSXi63QBeAP4FcgecgOQgA11kjkRBUOZdKCOCRgDmnMnoLvofREspgc2W622tJuxARDj7OoAPmocCzrG1AgcOia5AGAByNp2kIn7APgAC%2BAb6CAiHblMXQrAAYtAMAUJUshEGQaFAA&version=3.12

(Only applicable for extension issues) IDE Information

No response

[kinto0]

thanks for the report! I had started doing this a month ago but got sidetracked. It would be really nice.

[kinto0]

fixed bug + implemented the feature here. will be merged soon. thanks again for the report!