Add definition for composed live range#1342

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dizhang168 wants to merge 4 commits intowhatwg:mainfrom dizhang168:composed-live-range

+70-27

Commits on Jan 22, 2025

Commits on Jan 23, 2025

Fix collapse logic for set the start or end
dizhang168
committed

Commits on Jan 24, 2025

Fix for= typo
dizhang168
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