fix(ecs): update task definition validations for managed instances

[kg-aws]

Issue # (if applicable)

Closes #35644

Reason for this change

Fix the Task Definition validations for Managed Instances based off the public documentation

Public Doc: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task_definition_parameters-managed-instances.html#constraints-managed-instances

Description of changes

Describe any new or updated permissions being added

N/A

Description of how you validated changes

Add unit tests for the validations

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

[aws-cdk-automation]

The pull request linter fails with the following errors:

❌ Fixes must contain a change to an integration test file and the resulting snapshot.

If you believe this pull request should receive an exemption, please comment and provide a justification. A comment requesting an exemption should contain the text Exemption Request. Additionally, if clarification is needed, add Clarification Request to a comment.

Unit tests are enough as all changes are synth time validations

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[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).

[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).

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