Major changes

• Add owner_links field to DAGDetailsResponse (#50557)
• Allow non-string valid JSON values in Variable import (#49844)
• Add bundle_version to DagRun response (#49726)
• Use NonNegativeInt for backfill_id (#49691)
• Rename operation IDs for task instance endpoints to include map indexes (#49608)
• Remove filtering by last dag run state in patch dags endpoint (#51176)
• Make dag_run nullable in Details page (#50719)

Bug Fixes

• Fix OpenAPI schema for get_log API (#50547)
• Fix bulk action annotation (#50852)
• Fix patch_task_instance endpoint (#50550)