web-platform-tests/wpt merge_pr_46621

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[wptrunner] Mark WebDriver protocol as not alive in other cases (#46621)

• [wptrunner] Mark WebDriver protocol as not alive if OSError raised

This is a follow-up improvement to #45833. Protocol.is_alive() should
handle a browser that's unable to even establish the low-level
transport. OSError is a sufficiently broad base exception, which
encompasses socket.timeout, IOError, and the Connection*Error
family.

• Coerce all WebDriverExceptions to not alive

• Update safari infrastructure expectation