mocha v10: fix failure handling

Fixes error:

   An error occurred while bailing: TypeError: Cannot read property 'forEach' of undefined

bin/test-browser.js

@@ -90,7 +90,8 @@ class RemoteRunner {
     try {
       var additionalProps = ['pass', 'fail', 'pending'].indexOf(event.name) === -1 ? {} : {
         slow: event.obj.slow ? function () { return event.obj.slow; } : function () { return 60; },
-        fullTitle: event.obj.fullTitle ? function () { return event.obj.fullTitle; } : undefined
+        fullTitle: event.obj.fullTitle ? function () { return event.obj.fullTitle; } : undefined,
+        titlePath: event.obj.titlePath ? function () { return event.obj.titlePath; } : undefined,
       };
       var obj = Object.assign({}, event.obj, additionalProps);
 
@@ -123,9 +124,10 @@ class RemoteRunner {
   handleFailed() {
     if (bail) {
       try {
-        this.handlers['end'].forEach(function (handler) {
-          handler();
-        });
+        const triggerHandler = handler => handler();
+        this.onceHandlers.get('end').forEach(triggerHandler);
+        this.onceHandlers.delete('end');
+        this.handlers.get('end').forEach(triggerHandler);
       } catch (e) {
         console.log('An error occurred while bailing:', e);
       } finally {

tests/integration/webrunner.js

@@ -21,7 +21,8 @@
                   title: obj.title,
                   duration: obj.duration,
                   slow: typeof obj.slow === 'function' ? obj.slow() : undefined,
-                  fullTitle: typeof obj.fullTitle === 'function' ? obj.fullTitle() : undefined
+                  fullTitle: typeof obj.fullTitle === 'function' ? obj.fullTitle() : undefined,
+                  titlePath: typeof obj.titlePath === 'function' ? obj.titlePath() : undefined,
                 },
                 err: err && {
                   actual: err.actual,