[Designer] Issue in "https://adaptivecards.io/designer" website

Problem Description

Details:

Hi Team,
While working on to the Adaptive Crds's designer website, I encountered an issue where when I create a design via using platform UI there were places in the Adaptive Card's code where data/property of fields are been added in Headline case, which is giving a warning in VS code.

Expected behavior
NA

Actual behavior
NA

Error details
No response

Card JSON

{
"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
"type": "AdaptiveCard",
"version": "1.3",
"body": [
{
"type": "ColumnSet",
"columns": [
{
"type": "Column",
"width": "20px",
"minHeight": "0px",
"verticalContentAlignment": "Bottom",
"items": [
{
"type": "TextBlock",
"text": "$",
"spacing": "None", // Issue Here
"wrap": true,
"maxLines": 0,
"horizontalAlignment": "Center", // Issue Here
"weight": "Bolder", // Issue Here
"size": "Large" // Issue Here
}
],
"horizontalAlignment": "Center",
"spacing": "None" // Issue Here
},
{
"type": "Column",
"width": "stretch",
"items": [
{
"type": "Input.Number",
"id": "number",
"placeholder": "Enter a number",
"label": "Enter a number",
"min": 1,
"max": 1,
"value": 3,
"spacing": "None", // Issue Here
"isRequired": true,
"errorMessage": "please enter the quantity"
}
]
}
],
"spacing": "None", // Issue Here
"horizontalAlignment": "Center",
"style": "default"
}
],
"actions": [
{
"type": "Action.Submit",
"title": "Action.Submit"
}
]
}

Screenshot

No response

Start by reproducing the issue at https://adaptivecards.io/designer using the provided card JSON, then trace how the designer serializes properties such as spacing, horizontalAlignment, weight, and size. Done means generated card JSON uses the expected property casing and no longer produces the reported VS Code warnings.