fix: merge subblock values in auto-layout to prevent losing router co… #14039

Job	Run time
Detect Version	5s
Test and Build / Test and Build	1m 50s
Check Docs Changes	-1s
Build AMD64 (./docker/app.Dockerfile, ghcr.io/simstudioai/simstudio, ECR_APP)	5m 46s
Build AMD64 (./docker/realtime.Dockerfile, ghcr.io/simstudioai/realtime, ECR_REALTIME)	4m 17s
Build AMD64 (./docker/db.Dockerfile, ghcr.io/simstudioai/migrations, ECR_MIGRATIONS)	2m 14s
Build ARM64 (GHCR Only)	0s
Create GHCR Manifests	0s
Process Docs	0s
Create GitHub Release	0s
	14m 11s

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