Martin Andersson

fix: handle text refs in strict echo handler

1

Fixes a problem where the server generated code did not compile for strict echo. Also adds a test case to trigger the problem and then verify the update fixes #2076

When generating strict server using version 2.5.0 and respons type of text/plain the generated code looks something like this (for echo): ``` type InternalServerErrorTextResponse string type DeleteRequest500TextResponse struct { InternalServerErrorTextResponse...