fix: shell located spheres and partial solids

[RanaPriyansh]

Fixes #2074.

A located solid inside the compound returned by Workplane.findSolid() can make OpenCascade reject shell() with BRep_API: command not done. Normalize child locations before the hollow operation. Map selected faces to the normalized shape so open shells retain their intended openings.

Validation:

• Reproduced the failure on the upstream base with XZ, YZ, ZX, and ZY spheres. The two new regression tests failed before the fix and passed after it.
• Four focused shell tests passed. The tests cover inward and outward shells, a translated partial sphere, and a rotated box with a selected open face.
• The CadQuery Black fork check and git diff --check passed.
• The full test suite had the same unrelated test_interpPlate numeric failure before and after the change. On the base, it reported 891 passed, 3 skipped, and 1 failed. After the fix, it reported 893 passed, 3 skipped, and 1 failed. The expected volume is 10.956054314; this environment computes 10.338751346962978.

Tested with CadQuery OCP 8.0.1.0. OCP 8.0.1.1 was not available from the local package index, so that version remains untested.

Codex used.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.80%. Comparing base (c11b3f9) to head (9f2aed4).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2101   +/-   ##
=======================================
  Coverage   95.80%   95.80%           
=======================================
  Files          30       30           
  Lines        9589     9593    +4     
  Branches     1439     1439           
=======================================
+ Hits         9187     9191    +4     
  Misses        247      247           
  Partials      155      155           

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