New falky tests PR opened

[Mukta13]

Added 4 flaky tests fixed PR's. Found new flaky tests. The logs of these flaky tests can be found on my VM: /home/muktaj2/pr/fastjson2/fastjson2-nondex-log-2.txt, /home/muktaj2/pr/fastjson2/mapTest#test1-log.txt and /home/muktaj2/pr/fastjson2/find-flaky-nondex-log-2.txt

Can be run using these commands:

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

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

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

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