Fix race condition in plugin manager search results (#26819)

Search responses could arrive out of order, allowing a stale response
to overwrite the table after the user had typed a newer query. Track a
request id and discard responses whose id no longer matches the latest
request.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

src/main/js/plugin-manager-ui.js

@@ -3,12 +3,19 @@ import debounce from "lodash/debounce";
 import pluginManagerAvailable from "./templates/plugin-manager/available.hbs";
 import pluginManager from "./api/pluginManager";
 
+var latestRequestId = 0;
+
 function applyFilter(searchQuery) {
   // debounce reduces number of server side calls while typing
+  var requestId = ++latestRequestId;
   pluginManager.availablePluginsSearch(
     searchQuery.toLowerCase().trim(),
     50,
     function (plugins) {
+      // Discard stale responses so they don't overwrite results for a newer query
+      if (requestId !== latestRequestId) {
+        return;
+      }
       var pluginsTable = document.getElementById("plugins");
       var tbody = pluginsTable.querySelector("tbody");
       var admin = pluginsTable.dataset.hasadmin === "true";