The outdated runner fails to start silently without reporting a failure exit code

Describe the bug
When the runner is outdated and supposed to be upgraded, it doesn't report the exit code != 0

To Reproduce
Steps to reproduce the behavior:

1. Go to the runner directory
2. Run the configuration to register it without auto update ./config.sh --url $RUNNER_URL --token "$(get_runner_token)" --ephemeral --disableupdate --unattended --runnergroup Default --labels "$LABELS" --work _work --name "$INSTANCE_ID"
3. Then try to launch it ./run.sh && echo This piece of art just silently fails || echo GH does at least anything right

Expected behavior
Obviously, the application failing to start must report an error. But instead, we see the next:

√ Connected to GitHub

Current runner version: '2.313.0'
2024-04-30 10:58:45Z: Listening for Jobs
An error occured: Runner version v2.313.0 is deprecated and cannot receive messages.
Runner listener exit with terminated error, stop the service, no retry needed.
Exiting runner...
This piece of art just silently fails

Runner Version and Platform

2.313.0

OS of the machine running the runner? Linux

Reasons

This line should be exit $returnCode, but instead it masks errors.

Although, not only run.sh masks the exit code, but as well the run-helper.sh does it here:

$ bash -x /home/ubuntu/actions-runner/run-helper.sh
++ id -u
+ user_id=1000
+ '[' 1000 -eq 0 -a -z '' ']'
+ shopt -s nocasematch
+ SOURCE=/home/ubuntu/actions-runner/run-helper.sh
+ '[' -h /home/ubuntu/actions-runner/run-helper.sh ']'
+++ dirname /home/ubuntu/actions-runner/run-helper.sh
++ cd -P /home/ubuntu/actions-runner
++ pwd
+ DIR=/home/ubuntu/actions-runner
+ '[' '!' -z '' ']'
+ updateFile=update.finished
+ /home/ubuntu/actions-runner/bin/Runner.Listener run

√ Connected to GitHub

Current runner version: '2.313.0'
2024-04-30 11:29:21Z: Listening for Jobs
An error occured: Runner version v2.313.0 is deprecated and cannot receive messages.
+ returnCode=1 # <------ exit code 1
+ [[ 1 == 0 ]]
+ [[ 1 == 1 ]]
+ echo 'Runner listener exit with terminated error, stop the service, no retry needed.'
Runner listener exit with terminated error, stop the service, no retry needed.
+ exit 0 # <------ but who cares ¯\_(ツ)_/¯

Start with src/Misc/layoutroot/run.sh and src/Misc/layoutroot/run-helper.sh.template, then reproduce the outdated-runner behavior using the documented ./run.sh command. Trace how the listener's nonzero return code is handled in both scripts. Done means an outdated runner launch propagates a failure exit code instead of reporting success.