fix: update L1 CloudFormation resource definitions by removing outdated schema overrides

[mrgrain]

Reason for this change

We didn't receive automated updates for the following three resources since they had a temporary schema override:

AWS::ECS::CapacityProvider
AWS::Lambda::EventSourceMapping
AWS::Lambda::Function

This prevented new features like EventSourceMapping tagging or documentation updates to be applied to the AWS CDK.

Description of changes

Remove the outdated temporary schemas.

Description of how you validated changes

Manually compared that the current schemas from @aws-cdk/awscdk-service-spec are additive compared to the schema overrides. Specifically checked that the features they were added for are now available upstream.

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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✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

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AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 25e73e5
• Result: SUCCEEDED
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