[BUG] Error either the bucket name or prefix in the S3 data source is duplicated

[konokenj]

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Describe the bug

At knowledge settings, if user inputs duplicated bucket name or prefix in S3 datasource, causes error at cdk synth.

If bucket name is duplicated:

• s3://hoge/fuga/
• s3://hoge/piyo/

Error: There is already a Construct with name 'hoge' in BedrockCustomBotStack [BrChatKbStack01JG3V7FQZYG5NGX7R87966JTT]
    at Node.addChild (/codebuild/output/src1957739235/src/cdk/node_modules/constructs/src/construct.ts:447:13)
    at new Node (/codebuild/output/src1957739235/src/cdk/node_modules/constructs/src/construct.ts:71:17)
    at new Construct (/codebuild/output/src1957739235/src/cdk/node_modules/constructs/src/construct.ts:499:17)
    at new Resource (/codebuild/output/src1957739235/src/cdk/node_modules/aws-cdk-lib/core/lib/resource.js:1:1309)
    at new BucketBase (/codebuild/output/src1957739235/src/cdk/node_modules/aws-cdk-lib/aws-s3/lib/bucket.js:1:2172)
    at new Import (/codebuild/output/src1957739235/src/cdk/node_modules/aws-cdk-lib/aws-s3/lib/bucket.js:1:16085)
    at Function.fromBucketAttributes (/codebuild/output/src1957739235/src/cdk/node_modules/aws-cdk-lib/aws-s3/lib/bucket.js:1:16997)
    at Function.fromBucketName (/codebuild/output/src1957739235/src/cdk/node_modules/aws-cdk-lib/aws-s3/lib/bucket.js:1:14937)
    at /codebuild/output/src1957739235/src/cdk/lib/bedrock-custom-bot-stack.ts:353:29
    at Array.forEach (<anonymous>)

If prefix is duplicated:

• s3://hoge/fuga/
• s3://piyo/fuga/

Error: There is already a Construct with name 'DataSourcehoge--' in BedrockCustomBotStack [BrChatKbStack01JG3V7FQZYG5NGX7R87966JTT]
    at Node.addChild (/codebuild/output/src3955119784/src/cdk/node_modules/constructs/src/construct.ts:447:13)
    at new Node (/codebuild/output/src3955119784/src/cdk/node_modules/constructs/src/construct.ts:71:17)
    at new Construct (/codebuild/output/src3955119784/src/cdk/node_modules/constructs/src/construct.ts:499:17)
    at new Resource (/codebuild/output/src3955119784/src/cdk/node_modules/aws-cdk-lib/core/lib/resource.js:1:1309)
    at new DataSourceBase (/codebuild/output/src3955119784/src/cdk/node_modules/@cdklabs/generative-ai-cdk-constructs/src/cdk-lib/bedrock/data-sources/base-data-source.ts:92:1)
    at new DataSourceNew (/codebuild/output/src3955119784/src/cdk/node_modules/@cdklabs/generative-ai-cdk-constructs/src/cdk-lib/bedrock/data-sources/base-data-source.ts:162:1)
    at new S3DataSource (/codebuild/output/src3955119784/src/cdk/node_modules/@cdklabs/generative-ai-cdk-constructs/src/cdk-lib/bedrock/data-sources/s3-data-source.ts:98:5)
    at /codebuild/output/src3955119784/src/cdk/lib/bedrock-custom-bot-stack.ts:119:16
    at Array.map (<anonymous>)
    at new BedrockCustomBotStack (/codebuild/output/src3955119784/src/cdk/lib/bedrock-custom-bot-stack.ts:116:49)

Also, the prefix must end with / , but there is no such explanation, and no error message is displayed on UI.

"Value error, Invalid S3 URL format (must end with a '/'): s3://hoge/hoge"

To Reproduce

Steps to reproduce the behavior:

1. Go to 'bot console'
2. Click on 'create new bot'
3. Scroll down to 'S3 datasources'
4. Input duplicated:

• duplicated bucket name like s3://hoge/fuga/ and s3://hoge/piyo/
• duplicated prefix like s3://hoge/fuga/ and s3://piyo/fuga/

5. See errors in CodeBuild

Screenshots

Additional context

Add any other context about the problem here.