Fix: GPU: Broken GPU subdivision

The file glsl_compute_kernel.glsl is not written
in our safe GLSL. Don't run the preprocessor on it.

Fixes #128735

intern/opensubdiv/CMakeLists.txt

@@ -85,7 +85,7 @@ if(WITH_OPENSUBDIV)
     add_definitions(-D_USE_MATH_DEFINES)
   endif()
 
-  glsl_to_c(
+  data_to_c_simple(
     internal/evaluator/shaders/glsl_compute_kernel.glsl
     SRC
   )