[SDK Automation - JS] Build error reported without clear output

[raych1]

This issue was reported by the spec PR author. The SDK generation CI check failed in build step and the log says "cannot find module'xxx'". We would expect the log contains more information, such as "what are the next steps" or "how to fix this build errors".

08:36:55.476 cmdout 	[automation_generate.sh] src/rest/pollingHelper.ts(12,8): error TS2307: Cannot find module '@azure/core-lro' or its corresponding type declarations.
08:36:55.476 cmdout 	[automation_generate.sh] src/rest/pollingHelper.ts(50,29): error TS7006: Parameter 'path' implicitly has an 'any' type.
08:36:55.476 cmdout 	[automation_generate.sh] rush build (2 minutes 12.3 seconds)
08:36:55.476 cmderr 	[automation_generate.sh] Operations failed.
08:36:55.483 cmderr 	[automation_generate.sh] [ERROR] Error:
08:36:55.483 cmderr 	[automation_generate.sh] [ERROR] An error occurred while run build for typespec project: "specification/cognitiveservices/OpenAI.Inference":
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR] Err: Error: Command failed: rush build -t @azure/openai
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR] Stderr: "null"
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR] Stdout: "null"
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR] ErrorStack: "Error: Command failed: rush build -t @azure/openai
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR]     at checkExecSyncError (node:child_process:885:11)
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR]     at Object.execSync (node:child_process:957:15)
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR]     at Object.<anonymous> (/home/cloudtest/.nvm/versions/node/v18.15.0/lib/node_modules/@azure-tools/js-sdk-release-tools/dist/llc/generateRLCInPipeline/generateRLCInPipeline.js:209:29)
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR]     at Generator.next (<anonymous>)
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR]     at fulfilled (/home/cloudtest/.nvm/versions/node/v18.15.0/lib/node_modules/@azure-tools/js-sdk-release-tools/node_modules/tslib/tslib.js:112:62)
08:36:55.484 cmderr 	[automation_generate.sh] [ERROR]     at process.processTicksAndRejections (node:internal/process/task_queues:95:5)"
08:36:55.485 cmdout 	[automation_generate.sh] rename /mnt/vss/_work/1/s/node_modules_backup to /mnt/vss/_work/1/s/node_modules
08:36:55.514 info 	Script return with result [succeeded] code [0] signal [null] cwd [azure-sdk-for-js]: sh .scripts/automation_generate.sh

@MaryGao