feat: store richtext data as HTML rather than a Prosemirror tree #3271

Job	Run time
close-preview	0s
path-filter	4s
build-all / Emit container tag sha	2s
ci / ci (format)	1m 11s
ci / ci (lint)	1m 16s
ci / ci (type-check)	1m 16s
ci / ci (test-run)	1m 8s
build-all / build-base / Build	1m 5s
build-all / build-core / Build	1m 5s
build-all / build-jobs / Build	1m 5s
close-docs-preview	0s
deploy-docs-preview / build-docs	1m 5s
deploy-preview	1s
e2e	1s
status-check	1s
	9m 20s

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