[Rendering] AdaptiveTableCell is incorrectly serialize to AdaptiveContainer

Target Platforms

Other

SDK Version

3.1.0

Application Name

MIcrosoft Teams

Problem Description

When serializing a TableCell to JSON the type of TableCell is sereialized to Container. The correct type needs to be TableCell.
Workaround: set Type of TableCell as "TableCell" and it works fine.
Example:
"type": "TableRow", "cells": [ { "type": "Container", "items": [ { "type": "TextBlock", "weight": "bolder", "text": "Nome do Arquivo", "wrap": true } ] } ]

Screenshots

No response

Card JSON

{
  "type": "message",
  "attachments": [
    {
      "contentType": "application/vnd.microsoft.card.adaptive",
      "content": {
        "type": "AdaptiveCard",
        "version": "1.5",
        "body": [
          {
            "type": "TextBlock",
            "size": "extraLarge",
            "weight": "bolder",
            "text": "Core Test"
          },
          {
            "type": "Table",
            "rows": [
              {
                "type": "TableRow",
                "cells": [
                  {
                    "type": "Container",
                    "items": [
                      {
                        "type": "TextBlock",
                        "weight": "bolder",
                        "text": "Filename",
                        "wrap": true
                      }
                    ]
                  },
                  {
                    "type": "Container",
                    "items": [
                      {
                        "type": "TextBlock",
                        "weight": "bolder",
                        "text": "Filetype",
                        "wrap": true
                      }
                    ]
                  }
                ]
              }
            ],
            "columns": [
              {
                "width": 1
              },
              {
                "width": 1
              }
            ],
            "firstRowAsHeaders": true,
            "verticalCellContentAlignment": "center"
          }
        ],
        "msteams": {
          "width": "Full"
        }
      }
    }
  ]
}

Sample Code Language

No response

Sample Code

No response

No source file, test, or entry point is named. Start by reproducing TableCell serialization in the C# SDK at version 3.1.0 and trace why it emits Container; compare the result with the explicit Type workaround. Done means serialization emits TableCell without manual Type assignment and a regression test covers the JSON.