ycb_django_pr13512

what a new run launched now would send

Admin doesn't display properly unicode chars in JSONFields.
Description
	 
		(last modified by ZhaoQi99)
	 
>>> import json
>>> print json.dumps('中国')
"\u4e2d\u56fd"
json.dumps use ASCII encoding by default when serializing Chinese.
So when we edit a JsonField which contains Chinese character in Django admin,it will appear in ASCII characters.
I have try to fix this this problem in ​https://github.com/adamchainz/django-mysql/pull/714.And it works prefectly.

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