perf(fill): stream fixture writes, cache pubkeys, and skip redundant BAL hash check, warn on opcode trace failure

[jochem-brouwer]

Description

This PR contains 4 commits to optimize/warnings some parts of the filler process:

• don't verify the BAL hash against itself
• stream fixture writes
• ensure pubkey isn't calculated twice
• warn and discard a partial opcode trace

Related Issues or PRs

N/A.

Checklist

• Ran fast static checks to avoid CI fails, see Code Standards & Verifying Changes: just static
• PR title has the form <type>(<area>): <title>, where <type> and <area> come from an appropriate C-<type>, respectively A-<area>, label. The title should match the target squash commit message.

Cute Animal Picture

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.53%. Comparing base (ce0509a) to head (d7b1b4a).
⚠️ Report is 1 commits behind head on forks/amsterdam.

Additional details and impacted files

@@               Coverage Diff                @@
##           forks/amsterdam    #3379   +/-   ##
================================================
  Coverage            93.53%   93.53%           
================================================
  Files                  624      624           
  Lines                37074    37074           
  Branches              3394     3394           
================================================
  Hits                 34679    34679           
  Misses                1645     1645           
  Partials               750      750           

Flag	Coverage Δ
unittests	93.53% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[jochem-brouwer]

Split up in #3429, #3430, #3431