[BUG] Found non deterministic and timezone dependent test issue

[Mukta13]

Problem Description

The following files contain non-deterministic tests:

• MapTest.java
• DateTypeTest.java

The specific flaky tests in these files are:

• test1(), test1(), and test2() in MapTest.java
• test() in DateTypeTest.java (timezone-dependent issue)

Environment Info

• OS: Ubuntu 22.04.5 LTS, Release: 22.04
• JDK: java-17-openjdk-amd64
• Version: Latest version

Steps to Reproduce

Run the following commands for each identified flaky test to observe non-deterministic failures:

1. For MapTest.java:

`mvn -pl codegen-test edu.illinois:nondex-maven-plugin:2.1.7
-Dtest=com.alibaba.fastjson2.internal.processor.annotation.MapTest#test

mvn -pl codegen-test edu.illinois:nondex-maven-plugin:2.1.7
-Dtest=com.alibaba.fastjson2.internal.processor.annotation.MapTest#test1

mvn -pl codegen-test edu.illinois:nondex-maven-plugin:2.1.7
-Dtest=com.alibaba.fastjson2.internal.processor.annotation.MapTest#test2 `

2. For DateTypeTest.java:

mvn -pl codegen-test edu.illinois:nondex-maven-plugin:2.1.7 -Dtest=com.alibaba.fastjson2.internal.processor.primitives.DateTypeTest#test

Observed Results

The following non-deterministic errors were observed during test runs:

1. MapTest.java: [ERROR] MapTest.test2:62 expected: <{"values":{"a":"101","b":"201"}}> but was: <{"values":{"b":"201","a":"101"}}> [ERROR] MapTest.test1: expected: <{"values":{"a":"101","b":"201"}}> but was: <{"values":{"b":"201","a":"101"}}>

2. DateTypeTest.java (timezone-dependent): [ERROR] DateTypeTest.test:31 expected: <9729000> but was: <96129000>

Expected Results

All tests should pass consistently without non-deterministic failures, and the build should succeed after running the above commands.

[Mukta13]

Fix in #3159