https://www.lseg.com/etc.clientlibs/forge/components/content/rte/v2/rte/clientlibs/publish.min.js

1(function (document) {
2  "use strict";
3
4  function wrapExistingTables(root) {
5    const scope = root || document;
6    const tables = scope.querySelectorAll(".RichText table");
7    tables.forEach(function (table) {
8      // Skip if already inside a .Table wrapper
9      if (table.closest(".RichText--table")) return;
10
11      // Create wrapper and insert around the table
12      const wrapper = document.createElement("div");
13      wrapper.className = "RichText--table";
14
15      // Insert wrapper before the table, then move the table inside
16      table.parentNode.insertBefore(wrapper, table);
17      wrapper.appendChild(table);
18    });
19  }
20
21  // Run when AEM injects/initializes content in authoring
22  document.addEventListener("foundation-contentloaded", function (e) {
23    // Slight delay to allow any async rendering to complete (mirrors your setTimeout 100)
24    setTimeout(function () {
25      wrapExistingTables(e.target || document);
26    }, 100);
27  });
28
29  // Also run once on initial page load (author/publish)
30  document.addEventListener("DOMContentLoaded", function () {
31    setTimeout(function () {
32      wrapExistingTables(document);
33    }, 100);
34  });
35
36})(document);