mysql drivers has different behavior about string value stored in json column

[Diluka]

Issue Description

Expected Behavior

load string value stored in json column

Actual Behavior

when using mysql2, it can not load string value stored in json column. but it is ok when using mysql.

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Steps to Reproduce

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My Environment

Dependency	Version
Operating System
Node.js version	vX.Y.ZZZ
Typescript version	vX.Y.ZZZ
TypeORM version	vX.Y.ZZZ

Additional Context

Relevant Database Driver(s)

• aurora-data-api
• aurora-data-api-pg
• better-sqlite3
• cockroachdb
• cordova
• expo
• mongodb
• mysql
• nativescript
• oracle
• postgres
• react-native
• sap
• sqlite
• sqlite-abstract
• sqljs
• sqlserver

Are you willing to resolve this issue by submitting a Pull Request?

• Yes, I have the time, and I know how to start.
• Yes, I have the time, but I don't know how to start. I would need guidance.
• No, I don't have the time, although I believe I could do it if I had the time...
• No, I don't have the time and I wouldn't even know how to start.