[MR Analytics] Sort throughput table by "date merged"
Problem to solve
On the Merge Request Analytics page, the throughput table is not sorted.
Proposal
On the Merge Request Analytics page, the throughput table should be sorted by merged_at
in descending order (so the most recently-merged MR appears at the top).
Related links
- This was suggested by @wortschi in #229823 (comment 399472403)
- The GraphQL documentation does not clearly explain how to accomplish this. Can we simply add
order(merged_at: :desc)
to the relation?