Keep the Added Test Includes Below the NOMINMAX Guard

test_marchingsquares.cpp and test_texture_displacement.cpp had includes inside #ifndef NOMINMAX, which the tests inherit as defined on Windows from libslic3r, so those were skipped there. .clang-tidy also ignores the MSVC STL and UCRT internals, Boost.Multiprecision's fwd.hpp and CPython's Windows include directory, as in #16068.

.clang-tidy

@@ -7,8 +7,10 @@ CheckOptions:
   misc-include-cleaner.UnusedIncludes: false
   # Headers that declare a symbol but are not the one to include: per-platform
   # implementations of wxWidgets and Boost.Thread (a Linux run would suggest the
-  # GTK or pthread one), library internals and forward declarations, CPython's
-  # headers behind Python.h, curl's behind curl.h, oneTBB's behind tbb/, and
+  # GTK or pthread one), library internals and forward declarations (MSVC's STL
+  # __msvc_* and the Windows UCRT's corecrt_* included), CPython's headers behind
+  # Python.h (python3.x/ on Linux and macOS, libpython/include/ on Windows),
+  # curl's behind curl.h, oneTBB's behind tbb/, and
   # admesh's stl.h, which the include path also exposes without its directory.
   # Clipper's own clipper.hpp is only included through libslic3r/clipper.hpp or
   # clipper_z.hpp, which configure it first, and Boost.Polygon's headers only
@@ -27,7 +29,11 @@ CheckOptions:
     .*[/\\]impl[/\\].*;
     .*_fwd\.hpp;
     python3\.[0-9]+[/\\].*;
+    libpython[/\\]include[/\\].*;
     bits[/\\].*;
+    corecrt_.*\.h;
+    __msvc_.*\.hpp;
+    boost[/\\]multiprecision[/\\]fwd\.hpp;
     imconfig\.h;
     expat_external\.h;
     admesh[/\\]stl\.h;

tests/libslic3r/test_marchingsquares.cpp

@@ -1,5 +1,7 @@
 #ifndef NOMINMAX
 #define NOMINMAX
+#endif
+
 #include "libslic3r/Point.hpp"
 #include <cstddef>
 #include "libslic3r/libslic3r.h"
@@ -21,7 +23,6 @@
 #include "libslic3r/TriangleMesh.hpp"
 #include <cstdlib>
 #include <catch2/benchmark/catch_benchmark.hpp>
-#endif
 
 #include <catch2/catch_all.hpp>
 #include "test_utils.hpp"

tests/libslic3r/test_texture_displacement.cpp

@@ -1,5 +1,7 @@
 #ifndef NOMINMAX
 #define NOMINMAX
+#endif
+
 #include <catch2/matchers/catch_matchers_floating_point.hpp>
 #include <memory>
 #include <vector>
@@ -22,7 +24,6 @@
 #include <Eigen/Geometry>
 #include "libslic3r/libslic3r.h"
 #include <catch2/catch_message.hpp>
-#endif
 #include <catch2/catch_all.hpp>
 
 #include <algorithm>