improvement(tests): converge env-flags mocks onto a complete shared m… #23147

Job	Run time
Detect Version	4s
Build AMD64 (./docker/app.Dockerfile, ghcr.io/simstudioai/simstudio, ECR_APP, linux-x64-8-core)	7m 32s
Build AMD64 (./docker/pii.Dockerfile, ghcr.io/simstudioai/pii, ECR_PII, ubuntu-latest)	24s
Build AMD64 (./docker/db.Dockerfile, ghcr.io/simstudioai/migrations, ECR_MIGRATIONS, ubuntu-latest)	1m 0s
Test and Build / Lint and Test	2m 58s
Build AMD64 (./docker/realtime.Dockerfile, ghcr.io/simstudioai/realtime, ECR_REALTIME, ubuntu-lat...	1m 0s
Test and Build / Build App	5m 0s
Check Docs Changes	0s
Build ARM64 (GHCR Only)	0s
Migrate Dev DB	0s
Deploy Trigger.dev (Dev)	0s
Build Dev ECR	-1s
Migrate DB / Apply Database Migrations	33s
Promote Images	14s
Process Docs	0s
Create GHCR Manifests	0s
Create GitHub Release	0s
	18m 44s

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