Add second WPT for notifyEvent() called with a cached event.
This variant tests that a cached click event cannot be used by
notifyEvent() after it finishes dispatching, even if notifyEvent()
has never been called on the event before.
Change-Id: If27f5bb331d5d671a81a1aa35abbdc024507b358
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5769971
Reviewed-by: Liam Brady lbrady@google.com
Commit-Queue: Andrew Verge averge@chromium.org
Cr-Commit-Position: refs/heads/main@{#1338542}