Rename "#lva_mode" to "lvsa_mode"

Author: Owen Jones

src/util/irep_ids.def

@@ -842,7 +842,7 @@ IREP_ID_TWO(generic_types, #generic_types)
 IREP_ID_TWO(type_variables, #type_variables)
 IREP_ID_ONE(havoc_object)
 IREP_ID_TWO(overflow_shl, overflow-shl)
-IREP_ID_ONE(#lva_mode)
+IREP_ID_ONE(lvsa_mode)
 IREP_ID_ONE(is_initializer)
 
 #undef IREP_ID_ONE