Adjust wrong column reference for ResetMergeStatus (background job)

What does this MR do?

This column was renamed to state_id but was still being referred in this background job (raising 'column merge_requests.state does not exist') errors (#215141).

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Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

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
Edited by Oswaldo Ferreira