[w3ctag/design-reviews] Transitions on specified discrete properties (Issue #825)

こんにちは TAG-さん!

I'm requesting a TAG review of Transitions on specified discrete properties.

Allows transitions of discrete properties to be started on properties explicitly listed in the transition-property list. These transitions run using the same logic as an animation on those properties performing a flip at 50% by default but can be customized through the use of the transitionstart event and web-animations-1 APIs for modifying transition animations.

  - Explainer¹ (minimally containing user needs and example code): https://github.com/w3c/csswg-drafts/issues/4441#issuecomment-1329749962
  - Specification URL:
    - https://github.com/w3c/csswg-drafts/pull/8520
    - https://drafts.csswg.org/css-transitions-2/#transition-name-property
  - Tests:
    - https://wpt.fyi/results/css/css-transitions/all-with-discrete.tentative.html
    - https://github.com/web-platform-tests/wpt/pull/38860
    - https://github.com/web-platform-tests/wpt/pull/38815
    - https://github.com/web-platform-tests/wpt/pull/38817
    - https://github.com/web-platform-tests/wpt/pull/38816
    - https://github.com/web-platform-tests/wpt/pull/38997
  - User research: none
  - Security and Privacy self-review²: none, I believe this animations feature has no security/privacy implications.
  - GitHub repo (if you prefer feedback filed there): none
  - Primary contacts (and their relationship to the specification):
      - Joey Arhar @josepharhar Google
      - Robert Flack @flackr Google
  - Organization(s)/project(s) driving the specification: Google
  - Key pieces of existing multi-stakeholder review or discussion of this specification: https://github.com/w3c/csswg-drafts/issues/4441
  - External status/issue trackers for this specification (publicly visible, e.g. Chrome Status): https://chromestatus.com/feature/5071230636392448

Further details:

  - [x] I have reviewed the TAG's [Web Platform Design Principles](https://www.w3.org/TR/design-principles/)
  - Relevant time constraints or deadlines: We are trying to ship this in Chrome 114 which branches on April 20th and goes to stable on May 30th
  - The group where the work on this specification is currently being done: CSSWG
  - The group where standardization of this work is intended to be done (if current group is a community group or other incubation venue): CSSWG
  - Major unresolved issues with or opposition to this specification: none
  - This work is being funded by: Google

We'd prefer the TAG provide feedback as (please delete all but the desired option):

  💬 leave review feedback as a **comment in this issue** and @-notify [github usernames]

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