Resolve "Hide inoperable group search Releases filter - backend"

What does this MR do?

Ignore release_tag on the backend when filtering on groups.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Code review guidelines
• Style guides

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.

Related to #295253 (closed)