fix(stepfunctions-tasks): sageMakerCreateTrainingJob does not correctly support empty inputDataConfig

[xazhao]

Issue # (if applicable)

Closes #31132.

Reason for this change

inputDataConfig is not a required property in the API:
https://docs.aws.amazon.com/sagemaker/latest/APIReference/API_CreateTrainingJob.html#sagemaker-CreateTrainingJob-request-InputDataConfig

However in SageMakerCreateTrainingJob, it's marked as required. We should make it align with the API.

Description of changes

Make the property optional.

Description of how you validated changes

unit test and integration test

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

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[GavinZZ]

LGTM

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[xazhao]

@mergify update

[mergify]

update

☑️ Nothing to do

• #commits-behind>0 [📌 update requirement]
• -closed [📌 update requirement]
• -conflict [📌 update requirement]
• queue-position=-1 [📌 update requirement]

[mergify]

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AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: fcdec41
• Result: SUCCEEDED
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