Show ApplyButton's preparing state when a command is being prepared #12076

Job	Run time
Check which packages changed	0s
AI bot Tests	44s
Boxel UI Tests	3m 14s
Boxel Motion Tests	1m 7s
Boxel UI ensure raw icon changes only	44s
Boxel Icons ensure raw icon changes only	1m 17s
Boxel Tools VS Code Extension package	2m 9s
Matrix Client Tests (1, 12)	11m 33s
Matrix Client Tests (10, 12)	7m 46s
Matrix Client Tests (11, 12)	9m 18s
Matrix Client Tests (12, 12)	11m 45s
Matrix Client Tests (2, 12)	12m 56s
Matrix Client Tests (3, 12)	11m 2s
Matrix Client Tests (4, 12)	11m 38s
Matrix Client Tests (5, 12)	11m 54s
Matrix Client Tests (6, 12)	11m 45s
Matrix Client Tests (7, 12)	11m 11s
Matrix Client Tests (8, 12)	13m 15s
Matrix Client Tests (9, 12)	10m 1s
Realm Server Tests (billing-test.ts)	5m 13s
Realm Server Tests (indexing-test.ts)	6m 1s
Realm Server Tests (index-query-engine-test.ts)	5m 35s
Realm Server Tests (auth-client-test.ts)	5m 15s
Realm Server Tests (loader-test.ts)	5m 31s
Realm Server Tests (index-writer-test.ts)	5m 13s
Realm Server Tests (queue-test.ts)	5m 22s
Realm Server Tests (module-syntax-test.ts)	5m 11s
Realm Server Tests (realm-endpoints-test.ts)	10m 17s
Realm Server Tests (server-endpoints-test.ts)	8m 1s
Realm Server Tests (virtual-network-test.ts)	5m 12s
Deploy boxel to staging	0s
Merge Matrix reports and publish	1m 4s
	3h 31m 14s

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