Introduce customelementregistry global attribute#12000

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ja-y-son wants to merge 3 commits intowhatwg:mainfrom

ja-y-son:cer-attr

Commits on Mar 26, 2026

Introduce customelementregistry global attribute
Jayson Chen
committed
Add keep element custom element registry null
Jayson Chen
committed

Commits on Apr 24, 2026

Address PR review feedback for customelementregistry attribute

Jayson Chen
and
Copilot
committed