Updates for Firefox 140 beta

[Elchi3]

The @openwebdocs BCD collector project v10.13.1 found new features shipping in Firefox 140 beta which was released today. Currently, the collector covers about 90% of BCD, so the following list might not be exhaustive. Also, if a feature is in Firefox Nightly only, it is not considered here.

With this PR, BCD considers the following 66 features as shipping in Firefox 140:

• api.CSS.highlights_static
• api.CookieChangeEvent
• api.CookieChangeEvent.CookieChangeEvent
• api.CookieChangeEvent.changed
• api.CookieChangeEvent.deleted
• api.CookieStore
• api.CookieStore.change_event
• api.CookieStore.delete
• api.CookieStore.delete.partitioned_option
• api.CookieStore.get
• api.CookieStore.get.name_return_property
• api.CookieStore.get.value_return_property
• api.CookieStore.getAll
• api.CookieStore.set
• api.CookieStore.set.partitioned_option
• api.CookieStoreManager
• api.CookieStoreManager.getSubscriptions
• api.CookieStoreManager.subscribe
• api.CookieStoreManager.unsubscribe
• api.Element.getHTML.escapes_lt_gt_in_attributes
• api.Element.innerHTML.escapes_lt_gt_in_attributes
• api.Element.outerHTML.escapes_lt_gt_in_attributes
• api.ExtendableCookieChangeEvent
• api.ExtendableCookieChangeEvent.ExtendableCookieChangeEvent
• api.ExtendableCookieChangeEvent.changed
• api.ExtendableCookieChangeEvent.deleted
• api.Highlight
• api.Highlight.Highlight
• api.Highlight.add
• api.Highlight.clear
• api.Highlight.delete
• api.Highlight.entries
• api.Highlight.forEach
• api.Highlight.has
• api.Highlight.keys
• api.Highlight.priority
• api.Highlight.size
• api.Highlight.type
• api.Highlight.values
• api.Highlight.@@iterator
• api.HighlightRegistry
• api.HighlightRegistry.clear
• api.HighlightRegistry.delete
• api.HighlightRegistry.entries
• api.HighlightRegistry.forEach
• api.HighlightRegistry.get
• api.HighlightRegistry.has
• api.HighlightRegistry.keys
• api.HighlightRegistry.set
• api.HighlightRegistry.size
• api.HighlightRegistry.values
• api.HighlightRegistry.@@iterator
• api.LargestContentfulPaint.paintTime
• api.LargestContentfulPaint.presentationTime
• api.Notification.maxActions_static
• api.PerformancePaintTiming.paintTime
• api.PerformancePaintTiming.presentationTime
• api.PerformancePaintTiming.toJSON
• api.ServiceWorkerGlobalScope.cookiechange_event
• api.ServiceWorkerGlobalScope.cookieStore
• api.ServiceWorkerRegistration.cookies
• api.ShadowRoot.getHTML.escapes_lt_gt_in_attributes
• api.ShadowRoot.innerHTML.escapes_lt_gt_in_attributes
• api.Window.cookieStore
• css.selectors.highlight

Note: I also observe WebGPU enabled by default, but it seems to be a beta channel thing for now only, see https://groups.google.com/a/mozilla.org/g/dev-platform/c/hi1kFQF13Pk

See also mdn/mdn#680 and https://www.mozilla.org/en-US/firefox/140.0beta/releasenotes/

[github-actions]

Tip: Review these changes grouped by change (recommended for most PRs), or grouped by feature (for large PRs).

[caugner]

LGTM, all changes in this PR refer to one these three features:

1. CSS Highlight API
2. CookieStore API
3. PaintTimeMixin implementation