Generating empty json object eventough the output error type is Unit

[jiramares]

Describe the bug
When the outError type is Unit the response should be empty.

To Reproduce

val ep = Endpoint(RoutePattern.GET / "greeting" / PathCodec.string("name") / "exclamation" / PathCodec.string("bool"))
    .outCodec(HttpCodec.content[Greeting](MediaType.text.plain))
    .outError[Unit](Status.NotFound)
    .implement(greetingHandler)

generates response:

curl -v http://localhost:8080/greeting/Jane/exclamation/o
* Host localhost:8080 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:8080...
* Connected to localhost (::1) port 8080
> GET /greeting/Jane/exclamation/o HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/8.5.0
> Accept: */*
> 
< HTTP/1.1 404 Not Found
< content-type: application/json
< date: Mon, 16 Dec 2024 15:04:26 GMT
< content-length: 2
< 
* Connection #0 to host localhost left intact
{}

Expected behaviour
Send back empty response (no content-type??) and no data

curl -v http://localhost:8080/greeting/Jane/exclamation/o
* Host localhost:8080 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:8080...
* Connected to localhost (::1) port 8080
> GET /greeting/Jane/exclamation/o HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/8.5.0
> Accept: */*
> 
< HTTP/1.1 404 Not Found
< date: Mon, 16 Dec 2024 15:04:26 GMT
< content-length: 2
< 
* Connection #0 to host localhost left intact

Dependencies

    "dev.zio" %% "zio" % "2.1.9",
    "dev.zio" %% "zio-http" % "3.0.1"
    "dev.zio" %% "zio-schema" % "1.4.1"

[jiramares]

Tested with text/plain response content type:

val ep3 = Endpoint(RoutePattern.GET / "greeting" / PathCodec.string("name") / "exclamation" / PathCodec.string("bool"))
    .outCodec(HttpCodec.content[Greeting](MediaType.text.plain))
    .copy(error = HttpCodec.content[Unit](MediaType.text.plain) ++ HttpCodec.status(Status.NotFound))
    .implement(greetingHandler)

and behaviour is stilll strange:

curl -v http://localhost:8080/greeting/Jane/exclamation/n
* Host localhost:8080 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:8080...
* Connected to localhost (::1) port 8080
> GET /greeting/Jane/exclamation/n HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/8.5.0
> Accept: */*
> 
< HTTP/1.1 404 Not Found
< content-type: text/plain
< date: Tue, 17 Dec 2024 10:22:35 GMT
< content-length: 2
< 
* Connection #0 to host localhost left intact
()