Gin Bind default value example can't run the correct result.

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Description

From the document example https://github.com/gin-gonic/gin/blob/master/docs/doc.md#bind-default-value-if-none-provided, can't run the correct result which is same as example.

How to reproduce

package main

import (
    "net/http"

    "github.com/gin-gonic/gin"
)

type Person struct {
    Name      string    `form:"name,default=William"`
    Age       int       `form:"age,default=10"`
    Friends   []string  `form:"friends,default=Will;Bill"`
    Addresses [2]string `form:"addresses,default=foo bar" collection_format:"ssv"`
    LapTimes  []int     `form:"lap_times,default=1;2;3" collection_format:"csv"`
}

func main() {
    g := gin.Default()
    g.POST("/person", func(c *gin.Context) {
        var req Person
        if err := c.ShouldBindQuery(&req); err != nil {
            c.JSON(http.StatusBadRequest, err)
            return
        }
        c.JSON(http.StatusOK, req)
    })
    _ = g.Run("localhost:8080")
}

Expectations

$ curl -X POST http://localhost:8080/person

{"Name":"William","Age":10,"Friends":["Will","Bill"],"Colors":["red","blue"],"LapTimes":[1,2,3]}

Actual result

$ curl -X POST http://localhost:8080/person

{}

Environment

• go version: 1.23.2
• gin version (or commit ref): v1.10.0
• operating system: mac os 14.5

Comment From: kingcanfish

it is new feature after the gin version:v1.10.0, detail see https://github.com/gin-gonic/gin/pull/3986 if you want use it , maybe you need go get github.com/gin-gonic/gin@master use the master branch

Comment From: DachiChang

thx, I can get the right result when I upgraded to the master branch of gin.