Remove cleanup button for clusters with management project

What does this MR do?

This MR removes resource cleanup option from clusters that have management project. Such clusters can't cleanup resources for applications installed through the cluster management project. Previously this wasn't an issue because all models we had for cluster applications were uninstallable but with a plan to add CI based apps into models this will no longer be the case.

related discussion is here: !34688 (comment 369135695)

Screenshots

without management project	with management project

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team