COMP: Wrap ESMDemonsRegistrationFunction only with matching vector dim

[hjmjohnson]

Restrict itkESMDemonsRegistrationFunction.wrap to vector dimension == image dimension, matching the sibling DiffeomorphicDemonsRegistrationFilter wrapping. This removes the root cause of the recurring GCC 11.4 nightly -Waggressive-loop-optimizations warnings in itkWarpImageFilter.hxx and itkESMDemonsRegistrationFunction.hxx.

Root cause

The wrap file generated cross products such as
ESMDemonsRegistrationFunction<Image<float,3>, Image<float,3>, Image<Vector<float,2>,3>>.
Those instantiations index a 2-component displacement vector with loops bound by
ImageDimension — undefined behavior if ever executed, and provably out of bounds
to GCC's unroller (iteration 2 invokes undefined behavior). Because
ESMDemonsRegistrationFunction holds a WarpImageFilter member, one bad combination
warns in both headers.

Reproduced locally with conda-forge gcc 11.4 (same as the Ubuntu-22.04-gcc11.4-Rel-Python
nightly): a single mismatched explicit instantiation emits exactly the four dashboard
warning sites; matched-dimension instantiations are clean.

Two earlier attempts patched the loop code instead of the instantiation: PR #6367
switched to a runtime GetLength bound, then commit d4a40cb reverted to
ImageDimension because the runtime bound traded one warning for another. Neither
addressed the mismatched instantiation, so the warning returned on the nightly.

The removed Python types (e.g. itkESMDemonsRegistrationFunctionIF3IF3IVF23) were
broken by construction: NumericTraits::SetLength(update, ImageDimension) cannot
resize a fixed Vector<float,2>, so any use was UB.

[greptile-apps]

Greptile Summary

This PR narrows the Python wrapping for ESMDemonsRegistrationFunction. The main changes are:

• Replaces broad image-filter wrapping combinations with explicit template registrations.
• Iterates over configured image dimensions and scalar/vector pixel types.
• Keeps only displacement vector component counts that match the image dimension.

Confidence Score: 5/5

This looks safe to merge.

No blocking issues found in the changed code.

No files need attention.

T-Rex Logs

What T-Rex did

• Validated the esmdemons contract by inspecting the initial tool availability and before-state, confirming missing cmake, ninja, pixi, ctest, swig, and castxml while GCC/G++ and Python were available.
• Executed the after-state validation and verified all eight checks passed, with no cross-product helper remaining and matching-dimension placeholders aligned.
• Ran the validation script esmdemons_validate_wrap.py and reviewed repository diffs, confirming the working tree had no diff for the file relative to HEAD while the before comparison used HEAD^.

_{Ran code and verified through T-Rex}

Important Files Changed

Filename	Overview
Modules/Nonunit/Review/wrapping/itkESMDemonsRegistrationFunction.wrap	Generates matched image/vector dimension wrappers for ESMDemonsRegistrationFunction; no actionable issue found.

_{Reviews (1): Last reviewed commit: "COMP: Wrap ESMDemonsRegistrationFunction..." | Re-trigger Greptile}