[ty] Improve memory report formatting

[ibraheemdev]

A couple small improvements to the memory report:

• Consistent sorting between the summary and expanded view.
• Human readable memory size.
• Strip the inner whitespace from type names.

[astral-sh-bot]

Memory usage report

Memory usage unchanged ✅

[astral-sh-bot]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

✅ ecosystem check detected no linter changes.

Formatter (stable)

✅ ecosystem check detected no format changes.

Formatter (preview)

✅ ecosystem check detected no format changes.

[AlexWaygood]

I'm still slightly sceptical it's all that useful to have a table displayed if all top-line changes are <0.01MB large? But I don't feel too strongly

[ibraheemdev]

That's fair, I think it's fine to land your PR rebased on top of this one.