Test iterable edge inputs in solid fillet and chamfer

[RanaPriyansh]

The direct solid methods need iterable-input coverage alongside the Shape-input cases in #2105.
Add six cases for lists and one-use generators in fillet and chamfer, including asymmetric chamfer.
Check valid output geometry, face counts, analytical volumes, and valid, unit-volume input solids.
These tests support #2104.

Sequential Linux validation uses Ubuntu 24.04, Python 3.12.15, and OCP 8.0.1.1:

• Unchanged master: 898 passed, three skipped.
• Merged candidate: 904 passed, three skipped, including all six added cases.
• Full CadQuery Black and Mypy checks pass in both phases.
• Both phases use the same resolved environment, with only the editable CadQuery path changed.

The upstream AppVeyor matrix passes Black, Mypy, and the complete suite:

• Windows: 906 passed, one skipped.
• Linux and macOS: 904 passed, three skipped on each platform.
• All six added cases pass on each platform.

The Azure Windows 3.13 build also passes.
Both providers tested the PR merge commit, whose tree equals the published candidate tree.
An older Azure check record for that successful build remains queued.

The local macOS baseline volume failure in test_interpPlate remains recorded.

Codex used.

[RanaPriyansh]

Merged current master and completed fresh sequential Linux validation.
The baseline passed 898 tests, and the candidate passed 904 tests, with three skips in each phase.
All six added cases, full Black, and Mypy passed.

The macOS baseline still has the recorded test_interpPlate volume failure.
This PR remains a draft pending cross-platform validation and review.

Codex used.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.81%. Comparing base (5f5bc62) to head (2b85056).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2107   +/-   ##
=======================================
  Coverage   95.81%   95.81%           
=======================================
  Files          30       30           
  Lines        9599     9599           
  Branches     1441     1441           
=======================================
  Hits         9197     9197           
  Misses        247      247           
  Partials      155      155           

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[RanaPriyansh]

Marked ready for review after upstream cross-platform validation.
The AppVeyor matrix passes all six added cases on Windows, Linux, and macOS.
Black, Mypy, and the complete suite pass on each platform.
The Azure Windows 3.13 build also passes.

Older Azure check record 116333678107 remains queued for the same successful build 6099.
Please reconcile that record if it is a required merge check.

Codex used.