[Bug]: fulfillImpl does not set body if response specified

[robstoll]

Version

1.49.0

Steps to reproduce

kotlin code:

page.route({ it.startsWith(url}) { route ->
  val response = route.fetch()
  route.fulfill(Route.FulfillOptions().setResponse(response))
}

Expected behavior

I expect that the response is untouched routed through my mocker

Actual behavior

com.microsoft.playwright.impl.RouteImpl#fulfillImpl line 194

            APIResponseImpl response = (APIResponseImpl)options.response;
            if (response.context.connection == this.connection) {
                fetchResponseUid = response.fetchUid();
            } else {
                byte[] bodyBytes = response.body();
                body = Base64.getEncoder().encodeToString(bodyBytes);
                isBase64 = true;
                length = bodyBytes.length;
            }

No idea what response.context.connection == this.connection means but this branch is taken, omitting the body, modifying the request in an unexpected way

Additional context

As a workaround I set .setBodyBytes(response.body()) in addition

Environment

ubuntu 24, chrome, jdk 17