Remove the feature flag for attaching files in AI assistant #12539

Job	Run time
Check which packages changed	0s
AI bot Tests	51s
Boxel Motion Tests	1m 57s
Boxel Icons ensure raw icon changes only	1m 25s
Boxel UI ensure raw icon changes only	42s
Boxel UI Tests	3m 27s
Boxel Tools VS Code Extension package	2m 11s
Realm Server Tests (auth-client-test.ts)	5m 22s
Realm Server Tests (billing-test.ts)	5m 19s
Realm Server Tests (indexing-test.ts)	5m 57s
Realm Server Tests (index-writer-test.ts)	5m 24s
Realm Server Tests (index-query-engine-test.ts)	5m 30s
Realm Server Tests (module-syntax-test.ts)	5m 26s
Realm Server Tests (loader-test.ts)	5m 43s
Realm Server Tests (queue-test.ts)	5m 15s
Realm Server Tests (realm-endpoints-test.ts)	10m 26s
Realm Server Tests (server-endpoints-test.ts)	7m 51s
Realm Server Tests (virtual-network-test.ts)	5m 13s
Matrix Client Tests (1, 12)	11m 9s
Matrix Client Tests (10, 12)	7m 46s
Matrix Client Tests (11, 12)	9m 2s
Matrix Client Tests (12, 12)	9m 19s
Matrix Client Tests (2, 12)	11m 20s
Matrix Client Tests (3, 12)	9m 33s
Matrix Client Tests (4, 12)	10m 26s
Matrix Client Tests (5, 12)	10m 11s
Matrix Client Tests (6, 12)	9m 47s
Matrix Client Tests (7, 12)	9m 41s
Matrix Client Tests (8, 12)	9m 52s
Matrix Client Tests (9, 12)	10m 39s
Deploy boxel to staging	0s
Merge Matrix reports and publish	43s
	3h 17m 27s

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