Types stabilization for ts 5.5 #1217

Job	Run time
list-branches	9s
Build for data-view-clamped-stage-2	6s
Build for v4	10s
Build for master	9s
Build for web	10s
Build for v3	12s
Build for v4-types	30s
Build for proposals-types	9s
combine-pages-and-deploy	18s
	1m 53s

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