[backport cloud/1.41] fix: add isGraphReady guard to prevent premature graph access error logs (#9672)#10052

christian-byrne merged 1 commit intocloud/1.41Comfy-Org/ComfyUI_frontend:cloud/1.41from

backport-9672-to-cloud-1.41Comfy-Org/ComfyUI_frontend:backport-9672-to-cloud-1.41Copy head branch name to clipboard