fix(crypto): throw exception if system shielded tx is not supported. (#6514)

* fix: throw exception if system shielded tx is not supported.
* update the exception msg.

Author: Federico2014

framework/src/main/java/org/tron/core/db/Manager.java

@@ -874,14 +874,13 @@ public boolean pushTransaction(final TransactionCapsule trx)
 
     if (isShieldedTransaction(trx.getInstance()) && !chainBaseManager.getDynamicPropertiesStore()
         .supportShieldedTransaction()) {
-      return false;
+      throw new ContractValidateException("ShieldedTransferContract is not supported.");
     }
 
     if (isExchangeTransaction(trx.getInstance())) {
       throw new ContractValidateException("ExchangeTransactionContract is rejected");
     }
 
-
     pushTransactionQueue.add(trx);
     Metrics.gaugeInc(MetricKeys.Gauge.MANAGER_QUEUE, 1,
         MetricLabels.Gauge.QUEUE_QUEUED);

framework/src/test/java/org/tron/core/db/ManagerTest.java

@@ -320,7 +320,7 @@ public void transactionTest() {
       dbManager.pushTransaction(trans0);
       dbManager.pushTransaction(trans);
     } catch (Exception e) {
-      Assert.assertTrue(e instanceof TaposException);
+      Assert.assertTrue(e instanceof ContractValidateException);
     }
     dbManager.rePush(trans0);
     ReflectUtils.invokeMethod(dbManager,"filterOwnerAddress",

framework/src/test/java/org/tron/core/zksnark/ShieldedReceiveTest.java

@@ -314,10 +314,9 @@ public void testBroadcastBeforeAllowZksnark()
     transactionCap = TransactionUtils.addTransactionSign(transactionCap.getInstance(),
             ADDRESS_ONE_PRIVATE_KEY, chainBaseManager.getAccountStore());
     try {
-      boolean res = dbManager.pushTransaction(transactionCap);
-      Assert.assertFalse(res);
+      dbManager.pushTransaction(transactionCap);
     } catch (Exception e) {
-      Assert.fail(e.getMessage());
+      Assert.assertTrue(e instanceof ContractValidateException);
     }
   }