[Bug]: Unable to emit @typespec/http-server-csharp using azure-rest-api-specs typespec

[AntonioVT]

Describe the bug

Considering the PR and branch containerregistry-conversion, I run into issues when trying to compile typespec with emit option "@typespec/http-server-csharp".

Log:

> tsp compile specs/containerregistry/main.tsp

TypeSpec compiler v1.4.0

✔ Compiling
✔ @azure-tools/typespec-autorest 819ms specs/containerregistry/
× Running @typespec/http-server-csharp...
Emitter "@typespec/http-server-csharp" crashed! This is a bug.
Please file an issue at https://github.com/microsoft/typespec/issues

Error: Encountered type TemplateParameter which we don't know how to emit.
    at compilerAssert (file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/compiler/dist/src/core/diagnostics.js:150:11)
    at typeEmitterKey (file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/asset-emitter/dist/src/asset-emitter.js:618:17)
    at Object.emitType (file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/asset-emitter/dist/src/asset-emitter.js:238:25)
    at #resolveOperationResponse (file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/http-server-csharp/dist/src/lib/service.js:744:26)
    at CSharpCodeEmitter.interfaceDeclarationOperations (file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/http-server-csharp/dist/src/lib/service.js:586:77)
    at file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/asset-emitter/dist/src/asset-emitter.js:376:55
    at withTypeContext (file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/asset-emitter/dist/src/asset-emitter.js:519:9)
    at invokeTypeEmitter (file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/asset-emitter/dist/src/asset-emitter.js:366:9)
    at Object.emitInterfaceOperations (file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/asset-emitter/dist/src/asset-emitter.js:327:20)
    at CSharpCodeEmitter.interfaceDeclaration (file:///C:/work/acr/dev/src/ACR.RP/ACR.RP.Web.Spec/node_modules/@typespec/http-server-csharp/dist/src/lib/service.js:542:22)

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Library Version                0.58.0-alpha.20
TypeSpec Compiler Version      1.4.0
--------------------------------------------------

My configuration looks as follows:

emit:
  - "@azure-tools/typespec-autorest"
  - "@typespec/http-server-csharp"
options:
  ...
  "@typespec/http-server-csharp":
    emitter-output-dir: "{project-root}/typespec/codegen"
    output-type: "models"
    collection-type: "enumerable"

Surprised, considering that emitter "@azure-tools/typespec-autorest" works as expected, and also used the "@typespec/openapi3" to further verify, and it works as expected. But for some reason, the csharp generator runs into an issue.

Reproduction

The description is pretty straightforward.
I will go ahead and create a fork so you may clone and reproduce locally, and update the thread.

Checklist

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• The provided reproduction is a minimal reproducible example of the bug.