MergeWorker executes more than 100 SQL queries
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This worker executes more than 100 SQL queries, the maximum number of queries allowed as per MR https://gitlab.com/gitlab-org/gitlab/-/merge_requests/154254. The number of queries should be reduced to less than 100 and the corresponding whitelisted sections of code (`Gitlab::QueryLimiting.disable('...')`) should be removed.
See https://gitlab.com/gitlab-org/gitlab/-/jobs/6953155045 for example trace
Reference: https://docs.gitlab.com/ee/development/database/query_count_limits.html
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