Updates for Chrome 138 beta

[Elchi3]

The @openwebdocs BCD collector project v10.13.1 found new features shipping in Chrome 138 beta which was released yesterday. Currently, the collector covers about 90% of BCD, so the following list might not be exhaustive. Also, if a feature is in Chrome Canary/behind origin trials/enrollment, it is not considered here.

With this PR, BCD considers the following 57 features as shipping in Chrome 138:

• api.CreateMonitor
• api.CreateMonitor.downloadprogress_event
• api.LanguageDetector
• api.LanguageDetector.availability_static
• api.LanguageDetector.create_static
• api.LanguageDetector.destroy
• api.LanguageDetector.detect
• api.LanguageDetector.expectedInputLanguages
• api.LanguageDetector.inputQuota
• api.LanguageDetector.measureInputUsage
• api.PushSubscriptionChangeEvent
• api.PushSubscriptionChangeEvent.PushSubscriptionChangeEvent
• api.PushSubscriptionChangeEvent.newSubscription
• api.PushSubscriptionChangeEvent.oldSubscription
• api.ServiceWorkerGlobalScope.pushsubscriptionchange_event
• api.Summarizer
• api.Summarizer.availability_static
• api.Summarizer.create_static
• api.Summarizer.destroy
• api.Summarizer.expectedContextLanguages
• api.Summarizer.expectedInputLanguages
• api.Summarizer.format
• api.Summarizer.inputQuota
• api.Summarizer.length
• api.Summarizer.measureInputUsage
• api.Summarizer.outputLanguage
• api.Summarizer.sharedContext
• api.Summarizer.summarize
• api.Summarizer.summarizeStreaming
• api.Summarizer.type
• api.Translator
• api.Translator.availability_static
• api.Translator.create_static
• api.Translator.destroy
• api.Translator.inputQuota
• api.Translator.measureInputUsage
• api.Translator.sourceLanguage
• api.Translator.targetLanguage
• api.Translator.translate
• api.Translator.translateStreaming
• api.VideoFrame.flip
• api.VideoFrame.rotation
• api.Viewport
• api.Viewport.segments
• api.Window.viewport
• css.properties.height.stretch
• css.properties.max-height.stretch
• css.properties.max-width.stretch
• css.properties.min-height.stretch
• css.properties.min-width.stretch
• css.properties.width.stretch
• css.types.abs
• html.elements.script.type.speculationrules.target_hint
• http.headers.Clear-Site-Data.prefetchCache
• http.headers.Clear-Site-Data.prerenderCache
• http.headers.Permissions-Policy.summarizer
• manifests.webapp.scope_extensions

(several keys were updated in separate PRs, in particular those for the LLM features)

See also the 138 "Enabled by default" column on https://chromestatus.com/roadmap and https://developer.chrome.com/blog/chrome-138-beta

[github-actions]

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