fix(events): detailType doesnt allow filtering patterns

[scub]

Issue # (if applicable)

Closes #30220

Reason for this change

Unable to use content based filtering patterns based on an events detailType using the events.Rule L2 construct without leveraging a trap door

Description of changes

Allow for the usage of content based filtering patterns based on an events detailType

Description of how you validated changes

Overall these are the steps that i've taken:

yarn install
npx lerna run build --scope=aws-cdk-lib
cd packages/aws-cdk-lib
npx yarn test aws-events
npx yarn lint aws-events
npx yarn eslint --fix aws-events/lib/event-pattern.ts aws-events/test/rule.test.ts

# Running integration tests
cd ../../
npx lerna run build --scope=@aws-cdk-testing/framework-integ
cd packages/@aws-cdk-testing/framework-integ
npx yarn integ test/aws-events/test/*.js --update-on-failed

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]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 58da09e
• Result: FAILED
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