Fix the logging of results message sizes

[ayazhafiz]

The shorthand syntax is insufficient in practice, we must spell the
fields out. Tested by running a queue locally.

[github-actions]

✅ Bigtest for 0e2e4ff (run)

Benchmarks:

• RSpec: 7.70% overhead
  • RSpec time: 17.79 seconds
  • ABQ time: 19.16 seconds
• RSpec parallel, 10 runs: max 13.27% overhead
  • min 5.34% overhead
  • standard deviation: 2.74%
• Jest: 4.33% overhead
  • Jest time: 20.114 seconds
  • ABQ time: 20.985 seconds

Fuzz result sizes:

• PASSED

[github-actions]

✅ Bigtest for 92be935 (run)

Benchmarks:

• RSpec: 6.65% overhead
  • RSpec time: 17.74 seconds
  • ABQ time: 18.92 seconds
• RSpec parallel, 10 runs: max 13.36% overhead
  • min 5.86% overhead
  • standard deviation: 2.88%
• Jest: 3.79% overhead
  • Jest time: 19.925 seconds
  • ABQ time: 20.68 seconds

Fuzz result sizes:

• PASSED