Show ApplyButton's preparing state when a command is being prepared #13171

Job	Run time
Check which packages changed	0s
AI bot Tests	42s
Boxel Motion Tests	1m 9s
Boxel UI Tests	3m 26s
Boxel Icons ensure raw icon changes only	1m 22s
Boxel Tools VS Code Extension package	2m 6s
Matrix Client Tests (1, 12)	9m 53s
Boxel UI ensure raw icon changes only	40s
Matrix Client Tests (10, 12)	7m 51s
Matrix Client Tests (11, 12)	9m 48s
Matrix Client Tests (12, 12)	10m 10s
Matrix Client Tests (2, 12)	11m 39s
Matrix Client Tests (4, 12)	10m 6s
Matrix Client Tests (3, 12)	10m 39s
Matrix Client Tests (6, 12)	9m 53s
Matrix Client Tests (5, 12)	10m 12s
Matrix Client Tests (7, 12)	9m 34s
Matrix Client Tests (8, 12)	10m 29s
Matrix Client Tests (9, 12)	11m 0s
Realm Server Tests (auth-client-test.ts)	5m 20s
Realm Server Tests (billing-test.ts)	5m 19s
Realm Server Tests (indexing-test.ts)	6m 0s
Realm Server Tests (index-query-engine-test.ts)	5m 33s
Realm Server Tests (index-writer-test.ts)	5m 29s
Realm Server Tests (loader-test.ts)	5m 36s
Realm Server Tests (module-syntax-test.ts)	5m 11s
Realm Server Tests (queue-test.ts)	5m 36s
Realm Server Tests (realm-endpoints-test.ts)	13m 48s
Realm Server Tests (server-endpoints-test.ts)	7m 53s
Realm Server Tests (virtual-network-test.ts)	5m 3s
Merge Matrix reports and publish	44s
Deploy boxel to staging	0s
	3h 22m 11s

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