Draft: Resolve "Add range partitioning helper"

What does this MR do and why?

In this merge request, we are simulating the execution of the following helper:

partition_table_by_int_range('merge_request_diff_commits', 'merge_request_diff_id', partition_size: 10000000,
  primary_key: %w[merge_request_diff_id relative_order])

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Related to #423780 (closed)