Fix issue 3050 属性Feature.InitStringFieldAsEmpty导致没有使用双引号的数值型value解析错误

[J-Cod3r]

fixed #3050

解析json时如果设置属性 Feature.InitStringFieldAsEmpty，ASMDeserializerFactory 生成的字节码会将String类型的字段值设为空字符串并标记该字段的flag为 parse(相当于默认所有String类型的flag为parse)。

如果此时解析如下json串：

String jsonStr = "{"name":5, "address":"beijing", "id":"100", "age":10}";

由于name对应的bean字段是String类型，但name的value没有使用双引号，导致当执行 scanFieldString 方法时取不到name的值，而后续的 smartMatch 方法由于String类型字段的flag已被设置为parse，会导致找不到对应的 fieldDeserializer，从而导致解析结果错误。

[CLAassistant]

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[wenshao]

你确认这个改动能够跑过所有testcase？

[J-Cod3r]

你确认这个改动能够跑过所有testcase？

刚本地跑了遍所有的测试，确实影响了其他的测试案例，我的这个改动不是正确的选择

[codecov-io]

Codecov Report

Merging #3142 into master will decrease coverage by 0.00%.
The diff coverage is 66.66%.

@@             Coverage Diff              @@
##             master    #3142      +/-   ##
============================================
- Coverage     80.40%   80.39%   -0.01%     
+ Complexity     7309     7307       -2     
============================================
  Files           155      155              
  Lines         27369    27372       +3     
  Branches       6561     6562       +1     
============================================
  Hits          22006    22006              
- Misses         3457     3458       +1     
- Partials       1906     1908       +2     

Impacted Files	Coverage Δ	Complexity Δ
...json/parser/deserializer/JavaBeanDeserializer.java	79.80% <66.66%> (-0.24%)	307.00 <0.00> (ø)
...main/java/com/alibaba/fastjson/util/FieldInfo.java	86.20% <0.00%> (ø)	90.00% <0.00%> (-1.00%)
...ava/com/alibaba/fastjson/parser/JSONLexerBase.java	71.32% <0.00%> (ø)	827.00% <0.00%> (ø%)

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[J-Cod3r]

代码已修改，问题 #2387 可能也与本问题相关，相关testcase已修复