[amp-timeago:1.0] Bento tracking issue

[caroqliu]

High-level requirements

Consideration	Ready when	Status
Component compatibility	Conformance with 0.1 (see below)	✅
Testing	Unit tests	✅
Internationalization	locale supported	✅
Analytics	n/a	n/a
Accessibility	Audit performed, 0.1 for reference	✅
Page experience	Audit performed, 0.1 for reference	✅
Documentation	Written	✅
Storybook	Samples written	✅

Component compatibility

Attributes to support:

• datetime
• locale
• cutoff

amp-bind considerations:

• [datetime]

Open tasks

• Discuss content-as-fallback strategy and use of passthrough -- make sure this is mutable
• Preact unit tests
• Consider auto-refreshing behavior
• Decide shadow vs light dom
• Look into flaky tests, currently skipped in ❄️ [bento][amp-time-ago] Skip flaky tests in amp-timeago for now #30181