bug(tcgc): default name of api version parameter should be `api-version`

[archerzz]

Clear and concise description of the problem

Try to parse a tsp spec without specific api version parameter, like https://github.com/Azure/autorest.csharp/blob/5ff421832c6037a563b346407cad1a781933bf2c/test/TestProjects/MixAPIVersion-TypeSpec/MixAPIVersion-TypeSpec.tsp#L12-L27

TCGC will output a default api version parameter of which the name is apiVersion. I think for Azure flavor, TCGC should use api-version as the name.

Checklist

• [X] Follow our Code of Conduct
• [X] Check that this issue is about the Azure libraries for typespec. For feature request in the typespec language or core libraries file it in the TypeSpec repo
• [X] Read the docs.
• [X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[archerzz]

Looks like it's due to emitter's implementation. We should prefer serializedName over name.