Refactor indexing to get mtimes for entire realm in a single HTTP request #11361

Job	Run time
Check which packages changed	0s
Matrix Client Tests (1, 12)	11m 0s
Matrix Client Tests (2, 12)	10m 48s
Matrix Client Tests (3, 12)	12m 9s
Matrix Client Tests (4, 12)	10m 41s
Matrix Client Tests (5, 12)	10m 17s
Matrix Client Tests (6, 12)	10m 20s
Matrix Client Tests (7, 12)	10m 34s
Matrix Client Tests (8, 12)	9m 42s
Matrix Client Tests (9, 12)	8m 54s
Matrix Client Tests (10, 12)	7m 49s
Matrix Client Tests (11, 12)	8m 42s
Matrix Client Tests (12, 12)	9m 23s
AI bot Tests	44s
Boxel Motion Tests	1m 11s
Boxel Icons ensure raw icon changes only	1m 20s
Boxel UI Tests	3m 20s
Boxel UI ensure raw icon changes only	43s
Realm Server Tests	14m 18s
Boxel Tools VS Code Extension package	2m 18s
Merge Matrix reports and publish	48s
Deploy boxel to staging	0s
	2h 25m 1s

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