[Tech] use ST_Union to calculate facade and departement #5356

Job	Run time
Set application version and env profile	2s
Run backend unit tests	3m 39s
Run frontend unit tests	2m 14s
Build and package	5m 24s
Run E2E multi windows tests	0s
Run E2E tests (1)	3m 49s
Run E2E tests (2)	3m 51s
Run E2E tests (3)	3m 49s
Run E2E tests (4)	3m 48s
Run E2E tests (5)	3m 44s
Run E2E tests (6)	3m 48s
Run E2E tests (7)	3m 53s
Run E2E tests (8)	4m 32s
Run E2E tests (9)	3m 47s
Run E2E tests (10)	3m 50s
Run E2E tests (11)	3m 49s
Run E2E tests (12)	3m 52s
Generate and upload source maps to Sentry	40s
Push to registry	50s
	59m 21s

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