Flowable fails to be started in distributed scenario.

**Describe the bug**
An error is occasionally reported when the flowable engine is started in a distributed system.

```
org.apache.ibatis.exceptions.PersistenceException:
### Error updating database. Cause: com.huawei.gauss.exception.GaussException: [errorCode=GS-00729, SQLState='28000', reason='errLine = 0, errColumn = 0, errMsg=Unique constraint violated, index _PK_SYS_1_25, duplicate key cfg.task-related-entities-count,ioClient:@796811a5', sessionId=60, serverIP=127.0.0.1:26566, clientIP=10.118.241.216.]

### The error may exist in org/flowable/common/db/mapping/entity/Property.xml
### The error may involve org.flowable.common.engine.impl.persistence.entity.PropertyEntityImpl.insertProperty-Inline
### The error occurred while setting parameters
### SQL: insert into ACT_GE_PROPERTY ( NAME_, VALUE_, REV_ ) values ( ?, ?, 1 )
### Cause: com.huawei.gauss.exception.GaussException: [errorCode=GS-00729, SQLState='28000', reason='errLine = 0, errColumn = 0, errMsg=Unique constraint violated, index _PK_SYS_1_25, duplicate key cfg.task-related-entities-count,ioClient:@796811a5', sessionId=60, serverIP=127.0.0.1:26566, clientIP=127.0.0.1.]

at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) ~[mybatis-3.5.13.jar:3.5.13]
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:199) ~[mybatis-3.5.13.jar:3.5.13]
at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:184) ~[mybatis-3.5.13.jar:3.5.13]
at org.flowable.common.engine.impl.db.DbSqlSession.flushRegularInsert(DbSqlSession.java:519) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.common.engine.impl.db.DbSqlSession.flushInsertEntities(DbSqlSession.java:500) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.common.engine.impl.db.DbSqlSession.flushInserts(DbSqlSession.java:483) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.common.engine.impl.db.DbSqlSession.flush(DbSqlSession.java:368) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.common.engine.impl.interceptor.CommandContext.flushSessions(CommandContext.java:212) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.common.engine.impl.interceptor.CommandContext.close(CommandContext.java:70) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.common.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:114) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.common.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:56) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:51) ~[flowable-engine-common-6.8.1.jar:6.8.1]
at org.flowable.engine.impl.cfg.ProcessEngineConfigurationImpl.postProcessEngineInitialisation(ProcessEngineConfigurationImpl.java:2724) ~[flowable-engine-6.8.1.jar:6.8.1]
at org.flowable.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:934) ~[flowable-engine-6.8.1.jar:6.8.1]
at com.huawei.nceanalyzer.function.recipe.management.facade.FlowableEngineFacadeImpl.initInstance(FlowableEngineFacadeImpl.java:114) ~[function-recipe-management-11.16.1140-vm.jar:?]
at java.lang.Thread.run(Thread.java:750) [?:1.8.0_432]
Caused by: com.huawei.gauss.exception.GaussException: [errorCode=GS-00729, SQLState='28000', reason='errLine = 0, errColumn = 0, errMsg=Unique constraint violated, index _PK_SYS_1_25, duplicate key cfg.task-related-entities-count,ioClient:@796811a5', sessionId=60, serverIP=127.0.0.1:26566, clientIP=127.0.0.1.]

at com.huawei.gauss.exception.ExceptionUtil.processGaussException(SourceFile:104) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at com.huawei.gauss.handler.inner.MessageProcessHelper.doExecute(SourceFile:82) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at com.huawei.gauss.handler.preparestmt.inner.PrepareStmtMsgProcessCHandler.doExecute(SourceFile:160) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at com.huawei.gauss.handler.statement.DefaultStatmentCHandler.doExecuteOnTimer(SourceFile:172) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at com.huawei.gauss.handler.preparestmt.inner.PrepareStmtMsgProcessCHandler.preCommonPrepareExecute(SourceFile:118) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at com.huawei.gauss.handler.preparestmt.inner.PrepareStmtMsgProcessCHandler.preExecute(SourceFile:64) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at com.huawei.gauss.channel.context.statement.prepare.PrepareStmtExecuteContext.preProcess(SourceFile:51) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at com.huawei.gauss.jdbc.inner.ChannelExecutor.execute(SourceFile:40) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at com.huawei.gauss.jdbc.inner.GaussPrepareStatementHelper.execute(SourceFile:64) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at com.huawei.gauss.jdbc.inner.GaussPrepareStmtImpl.execute(SourceFile:131) ~[com.huawei.gauss.jdbc.ZenithDriver-1.9.1.jar:?]
at org.apache.commons.dbcp2.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:95) ~[commons-dbcp2-2.12.0.jar:2.12.0]
at org.apache.commons.dbcp2.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:95) ~[commons-dbcp2-2.12.0.jar:2.12.0]
at org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:48) ~[mybatis-3.5.13.jar:3.5.13]
at org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:75) ~[mybatis-3.5.13.jar:3.5.13]
at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:50) ~[mybatis-3.5.13.jar:3.5.13]
at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117) ~[mybatis-3.5.13.jar:3.5.13]
at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76) ~[mybatis-3.5.13.jar:3.5.13]
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:197) ~[mybatis-3.5.13.jar:3.5.13]
... 15 more
```
**Expected behavior**
In the distributed scenario, the Flowable does not occasionally report errors and can be started successfully.

**Code**
```java
engineConfiguration.setCustomFlowableFunctionDelegates(functionDelegates);
engineConfiguration.setActivityBehaviorFactory(new CustomActivityBehaviorFactory());
engineConfiguration.setHistoryLevel(HistoryLevel.NONE);
processEngine = engineConfiguration.buildProcessEngine();
```

I see the question is in `org.flowable.engine.impl.cmd.ValidateExecutionRelatedEntityCountCfgCmd#execute`, The distributed scenario is not considered in the code leading to competitive scenarios.

**Additional context**
flowable: 6.8.1
database: h2