ActiveRecord::NotNullViolation: PG::NotNullViolation: ERROR: null value in column "confidential" violates not-null constraint

https://sentry.gitlab.net/gitlab/gitlabcom/issues/4091013/?referrer=gitlab_plugin

PG::NotNullViolation: ERROR:  null value in column "confidential" violates not-null constraint
DETAIL:  Failing row contains (_, _, _, _, 2023-02-23 10:08:12.582771+00, 2023-02-23 10:08:12.582771+00).

  lib/gitlab/database/load_balancing/connection_proxy.rb:120:in `public_send'
    connection.public_send(...)
  lib/gitlab/database/load_balancing/connection_proxy.rb:120:in `block in write_using_load_balancer'
    connection.public_send(...)
  lib/gitlab/database/load_balancing/load_balancer.rb:127:in `block in read_write'
    yield connection
  lib/gitlab/database/load_balancing/load_balancer.rb:205:in `retry_with_backoff'
    return yield attempt # Yield the current attempt count
  lib/gitlab/database/load_balancing/load_balancer.rb:116:in `read_write'
    retry_with_backoff(attempts: attempts) do |attempt|
...
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ActiveRecord::NotNullViolation: PG::NotNullViolation: ERROR:  null value in column "confidential" violates not-null constraint