Experimental observer leak fix

Juggler will no longer notify content-document-global-created.
This patch also reverses the _Runtime domain rename fix due to Playwright breakage.

This was causing leaks with some WAFs.

README.md

@@ -264,7 +264,7 @@ Miscellaneous (WebGl spoofing, battery status, etc)
 - Custom implementation of Playwright for the latest Firefox
 - Various config patches to evade bot detection
 - Removed leaking Playwright patches:
-  - Fixes `Runtime` domain detection
+  - Fixes `content-document-global-created` observer leak
   - Fixes `navigator.webdriver` detection
   - Removed potentially leaking anti-zoom/meta viewport handling patches
   - Re-enable fission content isolation

additions/juggler/content/FrameTree.js

@@ -68,7 +68,6 @@ class FrameTree {
         frame._pendingNavigationId = helper.toProtocolNavigationId(loadIdentifier);
         this.emit(FrameTree.Events.NavigationStarted, frame);
       }, 'juggler-navigation-started-renderer'),
-      helper.addObserver(this._onDOMWindowCreated.bind(this), 'content-document-global-created'),
       helper.addObserver(this._onDOMWindowCreated.bind(this), 'juggler-dom-window-reused'),
       helper.addObserver((browsingContext, topic, why) => {
         this._onBrowsingContextAttached(browsingContext);

additions/juggler/protocol/Protocol.js

@@ -577,7 +577,7 @@ const Network = {
   },
 };
 
-const _Runtime = {
+const Runtime = {
   targets: ['page'],
   types: runtimeTypes,
   events: {