Narfinger 19f70dccf6 Combine some access to the thread local variable for script thread. (#38752) ...

This combines some access to the thread local variable for script
thread.

- We introduce a new UserInteractingScriptGuard which on drop handles
  the resetting of was_interacting to the previous value. Sometimes
throughout the code `ScriptThread::is_user_interacting` was reset to the
previous value while sometimes just set to false. This should
remove this footgun.
- This also reduces the amount of thread local access for
MutationObservers and task queue.

Testing: WPT tests should cover this.
Fixes: This addresses part of
https://github.com/servo/servo/issues/37969 but there is probably still
stuff to be done.

---------

Signed-off-by: Narfinger <Narfinger@users.noreply.github.com>
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>

2025-09-11 09:40:32 +00:00

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