Add signal override back as a runtime (#72561)
We're not seeing this on CI and I'm not seeing it on my local DD logs
unless I go out of my way to check. Keeping separate file means it's
easy to go through, but this indicates a bug that needs to be fixed and
so it should still be in runtime.
Doesn't revert #70034, as it still keeps log_signal.
Co-authored-by: Mothblocks <35135081+Mothblocks@users.noreply.github.com>