[BUG] Can't render the data when the field values are indexed with numbers in the data object

[Kwangje Cho]

Issue:
When the data in outputs are indexed with numbers, data-explorer can't render the output correctly.

        "application/vnd.dataresource+json": {
          "schema": {
            "fields": [
              {
                "name": "name"
              },
              {
                "name": "type"
              },
              {
                "name": "note"
              }
            ]
          },
          "data": [
            {
              "0": "aa",
              "1": "bb",
              "2": "cc"
            }
          ]
        }
      }

This is how it is rendered:

Here is an example of the notebook. You can use this to reproduce the issue:

{
  "metadata": {
    "kernelspec": {
      "name": "SQL",
      "display_name": "SQL",
      "language": "sql"
    },
    "language_info": {
      "name": "sql",
      "version": ""
    }
  },
  "nbformat_minor": 2,
  "nbformat": 4,
  "cells": [
    {
      "cell_type": "code",
      "source": [
        "test"
      ],
      "metadata": {
        "azdata_cell_guid": "286d911b-c759-489c-b7f8-5490479dbddd",
        "language": "sql",
        "tags": []
      },
      "outputs": [
        {
          "output_type": "execute_result",
          "metadata": {},
          "execution_count": 4,
          "data": {
            "application/vnd.dataresource+json": {
              "schema": {
                "fields": [
                  {
                    "name": "name"
                  },
                  {
                    "name": "type"
                  },
                  {
                    "name": "note"
                  }
                ]
              },
              "data": [
                {
                  "0": "aa",
                  "1": "bb",
                  "2": "cc"
                }
              ]
            }
          }
        }
      ],
      "execution_count": 4
    }
  ]
}

Note that if the data object uses the filed names, it will work correctly.

		"data": [
		  {
			"name": "aa",
			"type": "bb",
			"note": "cc"
		  }