DEV: Set QUnit per-test timeout (#21102)

60s is a lot, and I'd prefer 15s, but the first test in a suite can take up to 40s. 60s is still better than `Infinity` 😌

app/assets/javascripts/discourse/tests/setup-tests.js

@@ -202,6 +202,7 @@ export default function setupTests(config) {
   setupDeprecationCounter(QUnit);
 
   QUnit.config.hidepassed = true;
+  QUnit.config.testTimeout = 60_000;
 
   sinon.config = {
     injectIntoThis: false,

test/run-qunit.js

@@ -213,8 +213,6 @@ function logQUnit() {
 
   console.log("\nRunning: " + JSON.stringify(QUnit.urlParams) + "\n");
 
-  QUnit.config.testTimeout = 10000;
-
   let durations = {};
 
   let inTest = false;