Try to enable EventHubsKafkaBinderOAuthIT

[rujche]

Description

• This PR try to enable EventHubsKafkaBinderOAuthIT.
• Related PR: Fix Spring Cloud Azure IT tests #47176

All SDK Contribution checklist:

• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[rujche]

/azp run java - spring - tests

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Azure Pipelines successfully started running 1 pipeline(s).

[Copilot]

Pull request overview

This pull request enables the EventHubsKafkaBinderOAuthIT Spring Cloud Azure integration test so it runs as part of the Event Hubs IT suite (when -DskipSpringITs=false is used in CI), aligning with the intent to validate Event Hubs Kafka OAuth scenarios end-to-end.

Changes:

• Removed the @Disabled annotation from EventHubsKafkaBinderOAuthIT.
• Removed the now-unused Disabled import.