web-platform-tests/wpt merge_pr_46869

on GitHub

[wptrunner] Fix additional issues with WebDriverProtocol.is_alive() (#46869)

• It's possible for a thread spawned by WebDriverRun to outlive the
  runner process's main thread (https://crbug.com/348266194#comment3),
  in which case WebDriverProtocol.is_alive() may be called after the
  client is torn down and removed. Tolerate this case.
• #22044 didn't actually wire up HTTPWireProtocol.send(timeout=...)
  to the underlying socket timeout.