Fully disable MSCCL when machine is not matched (#1017)

* Disable MSCCL algorithm meta loading when machine is not matched

* fully disable init

* fix potential segfault

src/include/msccl/msccl_lifecycle.h

@@ -11,6 +11,7 @@
 #include "msccl/msccl_struct.h"
 
 bool mscclEnabled();
+bool mscclForceEnabled();
 
 void mscclSetIsCallerFlag();
 void mscclClearIsCallerFlag();