feat(ToStringMapStringE): Add support for non string JOSN value

[icbd]

we can use ToStringMapString convert

`{"key 1": "100", "key 2": -200, "key 3": 3.1415926}`

to

map[string]string{"key 1": "100", "key 2": "-200", "key 3": "3.1415926"}

[CLAassistant]

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