[cli-dev-mode] complete shutdown once devServer stops gracefully #95822
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In #95145
CliDevMode
is now responsible for the lifecycle of the entire CLI, but we forgot to double check that it was shutting things down as it should. The plumbing was already in place for this but wasn't actually used before becausesrc/core
callsprocess.exit(0)
once it is finished shutting down, so we now need to callCliDevMode#stop()
when we should finally teardown all of the listeners, watchers, servers, etc. that are started byCliDevMode
.