when importing data through csv, the content of varchar type with a json format will become [object Object].

[yangshuai0711]

Describe the bug:

when importing data through csv, the content of varchar type with a json format will become [object Object].

After checking, in attu front-end code, csv parsing library will parse a json format varchar value into an object, and the backend will handle it as a string.

Steps to reproduce:

1. create a Collection with a varchar field
2. make a csv file，the varchar field with values like "{""key"":123,""key2"":456}"
3. import the file into a exist partition

Attu version:

2.2.8

Attu version: