[BUG] Selecting radio button results in an invalid pdf.

[wojciechsmigielski96]

Description

I have a simple pdf with 3 choices radio button.
radioButtonExample.pdf

Field data of the pdf with no radio button selection:

[
    {
        "name": "RadioButton",
        "value": ""
    },
    {
        "name": "RadioButton",
        "value": "Off",
        "options": [
            "1",
            "Off"
        ]
    },
    {
        "name": "RadioButton",
        "value": "Off",
        "options": [
            "2",
            "Off"
        ]
    },
    {
        "name": "RadioButton",
        "value": "Off",
        "options": [
            "3",
            "Off"
        ]
    }
]

Field data of the pdf with the third option selected.

[
    {
        "name": "RadioButton",
        "value": ""
    },
    {
        "name": "RadioButton",
        "value": "Off",
        "options": [
            "1",
            "Off"
        ]
    },
    {
        "name": "RadioButton",
        "value": "Off",
        "options": [
            "2",
            "Off"
        ]
    },
    {
        "name": "RadioButton",
        "value": "3",
        "options": [
            "3",
            "Off"
        ]
    }
]

Running pdf_form_fill_json.go with Field data of the pdf with the third option selected results in broken pdf
Only the third option is visible.

The broken pdf's field data

[
    {
        "name": "RadioButton",
        "value": ""
    },
    {
        "name": "RadioButton",
        "value": "3",
        "options": [
            "1",
            "Off"
        ]
    },
    {
        "name": "RadioButton",
        "value": "3",
        "options": [
            "2",
            "Off"
        ]
    },
    {
        "name": "RadioButton",
        "value": "3",
        "options": [
            "3",
            "Off"
        ]
    }
]

The following field format also didn't work.

[
    {
        "name": "RadioButton",
        "value": "3"
    }
]

[github-actions]

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[wojciechsmigielski96]

I run pdf_form_list_fields.go on the document. The checkbox with radio flag is found instead of RadioBox.

Field 2
Name: RadioButton
 Flags: NoToggleToOff|Radio (49152)
 Button
 - Checkbox
 ..

Field 3
Name: RadioButton
 Flags: NoToggleToOff|Radio (49152)
 Button
 - Checkbox