feat: markdown streaming #3306

Job	Run time
Verify build-browser (macos-26)	45s
Build samples	23s
Build	5m 6s
Verify build-browser (windows-latest)	1m 34s
Verify build-browser (ubuntu-latest)	53s
Print commit stats	59s
Unit test	3m 12s
Static code analysis	4m 11s
Type definitions test	2m 8s
HTML test (6/17)	8m 3s
HTML test (4/17)	7m 28s
HTML test (3/17)	7m 19s
HTML test (5/17)	7m 50s
HTML test (17/17)	7m 35s
HTML test (11/17)	7m 38s
HTML test (10/17)	7m 28s
HTML test (14/17)	8m 10s
HTML test (8/17)	7m 23s
HTML test (7/17)	7m 4s
HTML test (9/17)	8m 14s
HTML test (13/17)	7m 24s
HTML test (1/17)	6m 58s
HTML test (15/17)	6m 53s
HTML test (2/17)	7m 26s
HTML test (12/17)	7m 28s
HTML test (16/17)	7m 35s
Merge test snapshots	5s
Merge test results	26s
	2h 27m 38s

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