fix(proposal): should break for each proposal case

Author: yanghang8612

actuator/src/main/java/org/tron/core/utils/ProposalUtil.java

@@ -757,6 +757,7 @@ public static void validator(DynamicPropertiesStore dynamicPropertiesStore,
           throw new ContractValidateException(
                   "This value[ALLOW_ENERGY_ADJUSTMENT] is only allowed to be 1");
         }
+        break;
       }
       default:
         break;