PR# 19290 trying to run AutoTest always crashes EiffelStudio

When loading a old project that has auto-tests that worked in an earlier version of EiffelStudio, now it always crashes Eiffel Studio. I suspect that the AutoTest implementation changed in an incompatible way AND that the exception triggered is not handled properly. I don't know what type of network connection ETEST_EVALUATOR_CONNECTION wants to start, but I verified that there are three existing listening sockets when EiffelStudio is running. Exception log attached.
My expectations are:
1) If something changed in an incompatible way, there should be a clear indication of that
2) Preferrably changes should be done automatically, or be assisted at least
3) Eiffel Studio should not crash so easily

Try to run autotests.

I analyzed the problem, leading to this routine:
---
create_localhost: INET_ADDRESS
                        -- (from INET_ADDRESS_FACTORY)
                        -- (export status {NONE})
                local
                        localhostname: STRING_8
                do
                        localhostname := Impl.local_host_name
                        check
                                        attached create_from_name (localhostname) as l_result
                        then
                                Result := l_result
                        end
                end
---
The problem is "Impl.local_host_name"; could it be replaced with "loopback_address.internal_host_name" (if there is no network)?
In my case the computer had no network, and the hostname did not resolve via /etc/hosts. However "localhost" would. For local connections "localhost" might be more efficient anyway, because the MTU (maximum transfer unit) is larger than when going through some Ethernet interface.

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Attachments for problem report #19290