[BUG]The default value of enableLambdaSnapStart in cdk.json is "True".

## 🐞Bug description

The following is written in the Optional Parameters section of the README.

> - **--enable-lambda-snapstart**: Enable [Lambda SnapStart](https://docs.aws.amazon.com/lambda/latest/dg/snapstart.html) (default: disabled). If this flag is set, improves cold start times for Lambda functions, providing faster response times for better user experience.

However, the value of enableLambdaSnapStart in cdk.json is true, so I think the default should be true or the value in cdk.json is incorrect.

Snap start is enabled if you deploy with `npx cdk deploy` instead of ./bin.sh.

Compare the README's Optional Parameters section with enableLambdaSnapStart in cdk.json and the deployment behavior described for npx cdk deploy versus ./bin.sh. Determine the intended default, align the documented and configured values, and verify both deployment paths use the same setting.

Written by the indexing model from the issue text.