BUG: Fix duplicate SWIG template instantiation in StructureTensor wrapping

The VariableSizeMatrix Image wrapping iterated over WRAP_ITK_REAL types
but always used double for the matrix element type, producing multiple
names for the same underlying type. SWIG -Werror turned the resulting
Warning 404 (duplicate template instantiation) into a build failure.

Remove the redundant foreach(t) loop for Image and ImageSource
wrappings where the type is always VariableSizeMatrix<double>,
and use consistent template names across all related wrappings.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: hjmjohnson

wrapping/itkStructureTensorImageFilter.wrap

@@ -2,19 +2,15 @@ itk_wrap_include("itkVariableSizeMatrix.h")
 
 itk_wrap_class("itk::Image" POINTER)
   foreach(d ${ITK_WRAP_IMAGE_DIMS})
-    foreach(t ${WRAP_ITK_REAL})
-      itk_wrap_template("VSM${ITKM_I${t}}${d}"
-        "itk::VariableSizeMatrix< ${ITKT_D} >, ${d}")
-    endforeach()
+    itk_wrap_template("VSM${d}"
+      "itk::VariableSizeMatrix< ${ITKT_D} >, ${d}")
   endforeach()
 itk_end_wrap_class()
 
 itk_wrap_class("itk::ImageSource" POINTER)
   foreach(d ${ITK_WRAP_IMAGE_DIMS})
-    foreach(t ${WRAP_ITK_REAL})
-      itk_wrap_template("VSM${ITKM_I${ITKM_${t}}}${d}"
-        "itk::Image<itk::VariableSizeMatrix< ${ITKT_D} >, ${d} >")
-    endforeach()
+    itk_wrap_template("IVSM${d}"
+      "itk::Image<itk::VariableSizeMatrix< ${ITKT_D} >, ${d} >")
   endforeach()
 itk_end_wrap_class()
 
@@ -29,7 +25,7 @@ itk_end_wrap_class()
 itk_wrap_class("itk::ImageToImageFilter" POINTER)
   foreach(d ${ITK_WRAP_IMAGE_DIMS})
     foreach(t ${WRAP_ITK_REAL})
-      itk_wrap_template("${ITKM_I${t}${d}}VSM${ITKM_I${ITKM_${t}}}${d}"
+      itk_wrap_template("${ITKM_I${t}${d}}IVSM${d}"
         "${ITKT_I${t}${d}}, itk::Image<itk::VariableSizeMatrix< ${ITKT_D} >, ${d} >")
     endforeach()
   endforeach()
@@ -38,9 +34,8 @@ itk_end_wrap_class()
 itk_wrap_class("itk::StructureTensorImageFilter" POINTER)
   foreach(d ${ITK_WRAP_IMAGE_DIMS})
     foreach(t ${WRAP_ITK_REAL})
-      itk_wrap_template("${ITKM_I${t}${d}}VSM${ITKM_I${ITKM_${t}}}${d}"
+      itk_wrap_template("${ITKM_I${t}${d}}IVSM${d}"
         "${ITKT_I${t}${d}}, itk::Image<itk::VariableSizeMatrix< ${ITKT_D} >, ${d} >")
     endforeach()
   endforeach()
 itk_end_wrap_class()
-