fix(api): answer upstream MCP, OAuth, and id-conflict failures with 4xx; keep PII keep-alive past the load balancer - #9210

fix(api): answer upstream MCP, OAuth, and id-conflict failures with 4xx; keep PII keep-alive past the load balancer#9210

waleedlatif1 merged 2 commits into

stagingsimstudioai/sim:stagingfrom

fix/upstream-failure-statusessimstudioai/sim:fix/upstream-failure-statusesCopy head branch name to clipboard