refactor(tests): inline resolved expect posts in ported static tests

[spencer-tb]

Description

Compiles away the runtime resolve_expect_post helper from 314 of the 331 ported static tests that still consume it (execution_testing.specs.static_state.expect_section).

Every consumer is fork-invariant modulo 5 files: its expect_entries_ table maps (d, g, v) index patterns to posts under a single fork constraint, so the resolver's first-match logic can be evaluated at rewrite time. The codemod resolves each parametrized (d, g, v) case statically and rewrites the test to construct its post directly — a single inline post = {...} where all cases share one result, or an expect_posts list plus a (d, g, v) → index mapping where they differ, with _exc mappings for the exception-carrying files.

Verified fixture-identical: A/B fill of all 331 consumers (12,375 cases, 993 fixture files) before/after, byte-equal apart from the _info source-line URLs.

17 files remain on the resolver (hand pile, for a follow-up): 5 with genuinely fork-varying expectations, 4 building entries programmatically, 4 with fork-keyed exception maps, 3 discarding a declared exception, and 1 using resolve_expect_post_fork. Once those are rewritten, expect_section's runtime role is gone and #3283's post_state_resolution.py relocation shrinks accordingly.

Codemod: one-off script, not committed; reproducible from the PR description if needed.

Related Issues or PRs

Part of the #3272 endgame (dissolving the legacy expect-table dialect). Reduces the surface #3283 must relocate.

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.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.49%. Comparing base (9d6e6f8) to head (b0c93af).

Additional details and impacted files

@@               Coverage Diff                @@
##           forks/amsterdam    #3284   +/-   ##
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  Coverage            93.49%   93.49%           
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  Files                  625      625           
  Lines                37032    37032           
  Branches              3385     3385           
================================================
  Hits                 34623    34623           
  Misses                1653     1653           
  Partials               756      756           

Flag	Coverage Δ
unittests	93.49% <ø> (ø)

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