Hide repeated trial offers on self-hosted instances

What does this MR do?

Hide repeated trial promotions on self-hosted instances.

On self-hosted instances when a trial license expires, and is deleted we current offer new repeated trials to the admins. With these changes we track trial ends date at instance level and do not suggest repeated trials to admins

The issues https://gitlab.com/gitlab-org/gitlab/issues/35443 and https://gitlab.com/gitlab-org/growth/engineering/issues/95

Screenshots

Before: We offered repeated trials	After: Once a trial ends, we offer purchase

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• 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

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