Fix tokens not revoking issue

[anjuchamantha]

Fix tokens not revoking issue

Tokens are not revoked after arrangement revoke request. Eventhough the token type is set as refresh_token, the access_token is passed to IS revokeTokenByOAuthClient method. This PR fixes this by passing refresh_token.

Related Issues

• https://github.com/wso2-enterprise/wso2-ob-internal/issues/898

Applicable Labels: CDS Toolkit

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Development Checklist

1. Build complete solution with pull request in place.
2. Ran checkstyle plugin with pull request in place.
3. Ran Findbugs plugin with pull request in place.
4. Ran FindSecurityBugs plugin and verified report.
5. Formatted code according to WSO2 code style.
6. Have you verified the PR doesn't commit any keys, passwords, tokens, usernames, or other secrets?
7. Migration scripts written (if applicable).
8. Have you followed secure coding standards in WSO2 Secure Engineering Guidelines?

Testing Checklist

1. Written unit tests.
2. Verified tests in multiple database environments (if applicable).
3. Tested with BI enabled (if applicable).