[Bug] Agent 0.4.6 启动异常，新增系统变量log4j2解析失败

[pony-qd]

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• I have searched the existing issues before asking.

AREX Test Service

AREX Java Agent (arextest/arex-agent-java)

Current Behavior

Springboot项目启动
不加载arex-agent启动正常
加载agent:0.4.4启动正常
加载agent:0.4.6启动异常
项目依赖信息如下：

Expected Behavior

不产生异常

Steps To Reproduce

异常信息如下：
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class org.apache.logging.log4j.util.PropertiesUtil
at org.apache.logging.log4j.status.StatusLogger.(StatusLogger.java:71)
at org.apache.logging.log4j.LogManager.(LogManager.java:60)
at org.apache.commons.logging.LogFactory$Log4jLog.(LogFactory.java:199)
at org.apache.commons.logging.LogFactory$Log4jDelegate.createLog(LogFactory.java:166)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:109)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:99)
at org.springframework.boot.SpringApplication.(SpringApplication.java:198)

Anything else

No response

Are you willing to submit a pull request to fix on your own?

• Yes I am willing to submit a pull request on my own!

[pony-qd]

经过分析原因如下：
0.4.6版本，新增了系统属性，且设置为Map类型

而log4j2-api
解析属性时统一为String,类型不匹配