[dev convenience] Compared histograms in summarize_stats.py output should not be sorted

[mdboom]

Bug report

Bug description:

When comparing two pystats results, currently the tables that compare two histograms are sorted by the amount of change in each row. This is confusing, because the histogram buckets get out of order. It would be better to leave these tables sorted by the histogram buckets.

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Linked PRs

• gh-114448: Don't sort summarize_stats.py histograms by amount of change #114449