[Bug]: Internal compiler error, operation in interface should already have been checked

[Sherylueen]

Describe the bug

Got Internal compiler error: Operation in interface should already have been checked.
Hi team,
Today I based on the typespec to fix some of the check errors in PR's pipeline.
I got this error, Internal compiler error, operation in interface should already have been checked, not know how to deal with it.

Code ref: AppComplianceAutomation.Management

Reproduction

1. go to https://github.com/Azure/azure-rest-api-specs-pr
2. check out to branch Sherylueen-appcomplianceautomation-Microsoft.AppComplianceAutomation-2024-06-27
3. under root folder run: px tsv specification/appcomplianceautomation/AppComplianceAutomation.Management

Checklist

• Follow our Code of Conduct
• Check that there isn't already an issue that request the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion.
• The provided reproduction is a minimal reproducible example of the bug.

[timotheeguerin]

Minimal repro

Issue seems to be when referencing an operation interface template that had a synax error in the template args

[timotheeguerin]

ok so if we get rid of the syntax error this patttern happens when a operation template in an interface is pointing to a is that is not an olperation

op test is IFace.Action;

interface IFace {
  Action<Headers> is string;
}

[markcowl]

The root issue in TypeSPec is tracked here: #3199 Leavign this as a TCGC issue once this is resolved.