Follow-up on #54032 for #35166:
- Gate the PLAYWRIGHT_HOST_PLATFORM_OVERRIDE retry on the host being an apt
release newer than Playwright recognizes (Ubuntu >24.04 / Debian >13) via
playwright_host_unrecognized(), instead of retrying on ANY install failure.
A network/disk/permission failure on a supported host now surfaces unchanged
rather than getting a mismatched-glibc build forced onto it.
- detect_os() now captures DISTRO_VERSION from os-release.
- Fold in the interruptibility fix (was PR #35304, self-closed): wrap the
download in 'timeout --foreground -k 10' (probed, with plain-timeout
fallback) so a terminal Ctrl+C reaches the child and a wedged download is
force-killed after the deadline.
- Add behavioral tests that source the helpers and assert the retry fires only
on Ubuntu 26.04 / Debian 14, not on supported hosts, non-apt distros,
native-success, operator-pinned override, or unsupported arch.
c0b4a3438a