[PR] [fix](serde) fix string deserialize with unescaped charator [doris]

[via GitHub]

amorynan opened a new pull request, #37250:
URL: https://github.com/apache/doris/pull/37250

   ## Proposed changes
   before this pr : if we use streamload with unescaped char in json format , 
we will not deal with it in nested type.
   like this :
   
![image](https://github.com/apache/doris/assets/18551114/c96eb2cc-bc7b-4b59-8242-6bd7fb31d890)
   after we will deal with it in output:
   ```
   |   27 | "双引号"    | [""双引号"", "反斜\线"]       |
   ```
   
   Issue Number: close #xxx
   
   <!--Describe your changes.-->
   
   


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