Update configure.h.in (#107955)

This symbol should be defined/not defined instead of defined as 0 or 1.

Fixes commit info for when running dotnet --info.

Co-authored-by: Jeremy Koritzinsky <[email protected]>

Author: github-actions[bot]

src/native/corehost/configure.h.in

@@ -1,7 +1,7 @@
 #ifndef PAL_HOST_CONFIGURE_H_INCLUDED
 #define PAL_HOST_CONFIGURE_H_INCLUDED
 
-#cmakedefine01 CLR_SINGLE_FILE_HOST_ONLY
+#cmakedefine CLR_SINGLE_FILE_HOST_ONLY
 
 #ifdef CLR_SINGLE_FILE_HOST_ONLY
 // When hosting components are all statically linked,
@@ -20,4 +20,4 @@
 #define CURRENT_OS_NAME "@CLR_CMAKE_TARGET_OS@"
 #define CURRENT_ARCH_NAME "@CLR_CMAKE_TARGET_ARCH@"
 
-#endif // PAL_HOST_CONFIGURE_H_INCLUDED
+#endif // PAL_HOST_CONFIGURE_H_INCLUDED