[hal] Raise SIGKILL instead of calling abort() (#6427)

We don't need to generate a core dump here if core dumps are enabled.

hal/src/main/native/cpp/jni/HAL.cpp

@@ -6,8 +6,11 @@
 
 #include <jni.h>
 
+#ifdef __FRC_ROBORIO__
+#include <signal.h>
+#endif
+
 #include <cassert>
-#include <cstdlib>
 #include <cstring>
 
 #include <fmt/format.h>
@@ -93,7 +96,7 @@ Java_edu_wpi_first_hal_HAL_terminate
   (JNIEnv*, jclass)
 {
 #ifdef __FRC_ROBORIO__
-  std::abort();
+  ::raise(SIGILL);
 #endif
 }