refactor(tests): inline ids and descriptions in point evaluation params

[chfast]

🗒️ Description

This is done to lower the review/maintenance cost of adding the test cases.

In test_valid_inputs and test_invalid_inputs:

• Convert tuple params to pytest.param(..., id=...) so each case's identifier lives next to its values; drop the parallel ids=[...] list in test_invalid_inputs.
• Move the per-case descriptions out of the function docstrings and into inline comments above the relevant pytest.param(s); shrink each docstring to a one-line summary.
• Replace the magic 0xC0 << 376 with the existing INF_POINT constant in Spec.kzg_to_versioned_hash() calls.
• Use idiomatic byte literals (b"", b"\x00", b"\x00" * 1023) instead of bytes() / bytes([0]) / bytes([0] * 1023).

No fixture changes (t8n cache 100% hit on all 14 cases).

🔗 Related Issues or PRs

#2909

✅ Checklist

• All: Ran fast static checks to avoid unnecessary CI fails, see also Code Standards and Enabling Pre-commit Checks:

  just static

• All: PR title adheres to the repo standard - it will be used as the squash commit message and should start type(scope):.
• All: Considered updating the online docs in the ./docs/ directory.
• All: Set appropriate labels for the changes (only maintainers can apply labels).
• Tests: Ran mkdocs serve locally and verified the auto-generated docs for new tests in the Test Case Reference are correctly formatted.
• Tests: For PRs implementing a missed test case, update the post-mortem document to add an entry the list.
• Ported Tests: All converted JSON/YML tests from ethereum/tests or tests/static have been assigned @ported_from marker.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.44%. Comparing base (2de6b9f) to head (fa5504c).
⚠️ Report is 1 commits behind head on forks/amsterdam.

Additional details and impacted files

@@               Coverage Diff                @@
##           forks/amsterdam    #2907   +/-   ##
================================================
  Coverage            90.44%   90.44%           
================================================
  Files                  535      535           
  Lines                32439    32439           
  Branches              3012     3012           
================================================
  Hits                 29338    29338           
  Misses                2573     2573           
  Partials               528      528           

Flag	Coverage Δ
unittests	90.44% <ø> (ø)

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[felix314159]

thanks!