fix(call-chain): x-sim-via propagation for API blocks and MCP tools (… #10559

Job	Run time
Detect Version	4s
Test and Build / Test and Build	3m 59s
Check Docs Changes	0s
Build AMD64 (./docker/realtime.Dockerfile, ghcr.io/simstudioai/realtime, ECR_REALTIME)	2m 5s
Build AMD64 (./docker/app.Dockerfile, ghcr.io/simstudioai/simstudio, ECR_APP)	3m 50s
Build AMD64 (./docker/db.Dockerfile, ghcr.io/simstudioai/migrations, ECR_MIGRATIONS)	59s
Build ARM64 (GHCR Only)	0s
Create GitHub Release	0s
Create GHCR Manifests	0s
Process Docs	0s
	10m 57s

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