Ignore state column for issues/merge_requests

What does this MR do?

Removes the deprecated state column from issues and merge_requests tables.

The state column will be removed from database in #36370 (closed).

Related to #33814 (closed)

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