[WIP] Popups triggered during a test execution are not isolated between sequentially executed tests, leading to state leakage (#5121)

Author: Copilot

lib/helper/Playwright.js

@@ -642,6 +642,9 @@ class Playwright extends Helper {
   async _after() {
     if (!this.isRunning) return
 
+    // Clear popup state to prevent leakage between tests
+    popupStore.clear()
+
     if (this.isElectron) {
       this.browser.close()
       this.electronSessions.forEach(session => session.close())

lib/helper/Puppeteer.js

@@ -330,6 +330,9 @@ class Puppeteer extends Helper {
   async _after() {
     if (!this.isRunning) return
 
+    // Clear popup state to prevent leakage between tests
+    popupStore.clear()
+
     // close other sessions
     const contexts = this.browser.browserContexts()
     const defaultCtx = contexts.shift()