COMP: Derive the abi3 floor from the Python wrapping floor

Two independent 3.11 literals could drift apart even though abi3-only
wrapping makes them necessarily equal.

Author: hjmjohnson

CMake/ITKSetPython3Vars.cmake

@@ -93,11 +93,12 @@ else()
     )
   endif()
 
-  # Cached so the abi3 floor is a single source of truth shared with the module
-  # wrapping macros (itk_end_wrap_module.cmake USE_SABI).
+  # Wrapping requires this version and every module is abi3, so the wrapping
+  # floor and the Limited API floor are the same number. Cached so
+  # itk_end_wrap_module.cmake can pin USE_SABI to it.
   set(
     _ITK_MINIMUM_SUPPORTED_LIMITED_API_VERSION
-    3.11
+    ${ITK_WRAP_PYTHON_MINIMUM_VERSION}
     CACHE INTERNAL
     "Minimum Python minor version for the abi3 / Limited API floor"
   )