Column order is not preserved after dragging columns then loading more entities that add new columns

When loading more entities in a large table, sometimes the new entities add new columns to the data table. However, if the existing columns have been reordered via drag and drop (not using the Custome Columns dialog), the previous column order is lost.

Repro Steps

1. Create a CSV file using the following Node script:

   const fs = require("fs");
   const head = "PartitionKey,RowKey,V1,V1@type,V2,V2@type,V3,V3@type";
   let out1 = "";
   let out2 = "";
   let out3 = "";
   for (let i = 0; i < 1001; i++) {
       out1 += `\n,1_${i.toString().padStart(4, "0")},true,Boolean,,,,`;
       out2 += `\n,2_${i.toString().padStart(4, "0")},,,true,Boolean,,`;
       out3 += `\n,3_${i.toString().padStart(4, "0")},,,,,true,Boolean`;
   }
   fs.writeFile("coltest.csv", head + out1 + out2 + out3, () => { });
   

2. Create a new table.
3. Import the CSV file (this may take a minute or two).
4. Reorder one of the columns by dragging and dropping the column header.
5. Click Load More at the bottom of the table.

Use the provided Node.js script to generate coltest.csv, import it into a new table, reorder a column by dragging, and click Load More. Trace how the table retains column order while new entity columns are added. Done means the dragged order remains unchanged and the new columns are incorporated correctly.