"Sort by key" causes the value type to change

Hi,

When I use the "Sort by key" function, after sorting, it converts the number type to a string type.
See "age" in the example below.

Before sorting
`{
	"name": "Ycy",
	"age": 27,
	"is_student": false
}`

After sorting
`{
	"age": "27",
	"is_student": false,
	"name": "Ycy"
}`

My plugin version is 2.1.1.0 and npp version is 8.8.5
Looking forward to your reply, thx.