GTK is already using a timer, but we can use existing code in WebPageProxy to schedule activity state changes, and use it also for WPE.
Pull request: https://github.com/WebKit/WebKit/pull/30385
Committed 280614@main (de96df2a7c26): <https://commits.webkit.org/280614@main> Reviewed commits have been landed. Closing PR #30385 and removing active labels.