[libc] Fix pthread_create_test for 32 bit systems (#66564)

The test tries to set the guard_size and stack_size of a thread to
SIZE_MAX / 4, which is a huge value in 64-bit systems but 1GB in 32-bit
ones.

We increase the size to 3 * (SIZE_MAX / 4) so it can also fail in 32-bit 
systems.

libc/test/integration/src/pthread/pthread_create_test.cpp

@@ -287,7 +287,7 @@ static void run_failure_tests() {
   run_failure_config(PTHREAD_STACK_MIN, SIZE_MAX);
   run_failure_config(PTHREAD_STACK_MIN, SIZE_MAX - PTHREAD_STACK_MIN);
   run_failure_config(SIZE_MAX / 2, SIZE_MAX / 2);
-  run_failure_config(SIZE_MAX / 4, SIZE_MAX / 4);
+  run_failure_config(3 * (SIZE_MAX / 4), SIZE_MAX / 4);
   run_failure_config(SIZE_MAX / 2 + 1234, SIZE_MAX / 2);
 
   // Test invalid parameters that are impossible to obtain via the