bpo-40268: Remove a few pycore_pystate.h includes (GH-19510)

diff --git a/Python/preconfig.c b/Python/preconfig.c
index db32875..531d8d0 100644
--- a/Python/preconfig.c
+++ b/Python/preconfig.c
@@ -2,7 +2,7 @@
 #include "pycore_getopt.h"
 #include "pycore_initconfig.h"
 #include "pycore_pymem.h"      // _PyMem_GetAllocatorName()
-#include "pycore_pystate.h"    // _PyRuntime_Initialize()
+#include "pycore_runtime.h"    // _PyRuntime_Initialize()
 #include <locale.h>            // setlocale()