[BUG] Published API causes unhandle exceptions for larger message map

[jessieweiyi]

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🐞Describe the bug

When using the published API and the message map is too large, it will cause the sqs consumer lambda (SqsConsumeHandler) unhandled exception and terminate.

See the screenshot below.

🔄 To Reproduce

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4. See error

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🔎 Logs for Chat Issues

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• /aws/lambda/BedrockChatStack-BackendApiHandlerXXXX
• /aws/lambda/BedrockChatStack-WebSocketHandlerXXXX

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📝 Additional context

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[cyruxOP]

The issue is with cdk/lib/api-publishment-stack.ts while creating the sqs handler lambda in the env LARGE_MESSAGE_BUCKET is not configured leading to this error while uploading the file to s3.