Custom Default value is not working as expected in Select Component

[SumeetKumarTiwariJava]

Describe the bug
If I add the below JavaScript in the Custom Default Value, the Select component value appears multiple times.

console.log(">>> selectJson custom_default_value");

    return [{label:"cedric",value:"01"},

            {label:"Irene",value:"02"} ,

            {label:"Gisa",value:"03"}

          ];

Version/Branch
sandbox default version /4.14.6

To Reproduce
Steps to reproduce the behavior:

1. Create form.

2. Add Select component.

3. Edit the form and navigate to the Data tab

4. Select the Multiple values

5. Edit the custom Default value

6. Add this in Javascript
   console.log(">>> selectJson custom_default_value");

    return [{label:"cedric",value:"01"},
   
            {label:"Irene",value:"02"} ,
   
            {label:"Gisa",value:"03"}
   
          ];
   

Expected behavior
Only unique values should be displayed — currently, I can see duplicate entries.

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
Hosting Type :
https://formio.github.io/formio.js/app/sandbox.html
formio js version : default version /4.14.6

Form JSON :

{
"display": "form",
"components": [
{
"label": "Select",
"widget": "choicesjs",
"tableView": true,
"multiple": true,
"customDefaultValue": "console.log(">>> selectJson custom_default_value");\n \n return [{label:"cedric",value:"01"},\n \n {label:"Irene",value:"02"} ,\n \n {label:"Gisa",value:"03"}\n \n ];",
"validateWhenHidden": false,
"key": "select",
"type": "select",
"input": true
},
{
"type": "button",
"label": "Submit",
"key": "submit",
"disableOnInvalid": true,
"input": true,
"tableView": false
}
]
}