Fix browser hanging during cleanup by not waiting for browser.close() to complete (#5319)

* Initial plan

* Fix test hang issue when restart: false by properly mapping to context restart

Co-authored-by: kobenguyent <7845001+kobenguyent@users.noreply.github.com>

* Fix browser close hanging by ensuring all pages and contexts are closed first

Co-authored-by: kobenguyent <7845001+kobenguyent@users.noreply.github.com>

* Don't wait for browser.close() to prevent hanging - fire and forget approach

Co-authored-by: kobenguyent <7845001+kobenguyent@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: kobenguyent <7845001+kobenguyent@users.noreply.github.com>

Author: Copilot

lib/helper/Playwright.js

@@ -1389,6 +1389,7 @@ class Playwright extends Helper {
       }
     }
 
+    // Close browserContext if recordHar is enabled
     if (this.options.recordHar && this.browserContext) {
       try {
         await this.browserContext.close()
@@ -1398,16 +1399,16 @@ class Playwright extends Helper {
     }
     this.browserContext = null
 
+    // Initiate browser close without waiting for it to complete
+    // The browser process will be cleaned up when the Node process exits
     if (this.browser) {
       try {
-        // Add timeout to prevent browser.close() from hanging indefinitely
-        await Promise.race([this.browser.close(), new Promise((_, reject) => setTimeout(() => reject(new Error('Browser close timeout')), 5000))])
+        // Fire and forget - don't wait for close to complete
+        this.browser.close().catch(() => {
+          // Silently ignore any errors during async close
+        })
       } catch (e) {
-        // Ignore errors if browser is already closed or timeout
-        if (!e.message?.includes('Browser close timeout')) {
-          // Non-timeout error, can be ignored as well
-        }
-        // Force cleanup even on error
+        // Ignore any synchronous errors
       }
     }
     this.browser = null