cdp: call context created w/ correct is_default_context value

Co-authored-by: Navid EMAD <navid.emad@yespark.fr>

src/cdp/domains/page.zig

@@ -671,7 +671,7 @@ pub fn frameNavigated(arena: Allocator, bc: *CDP.BrowserContext, event: *const N
             "",
             frame.origin orelse "",
             aux_data,
-            true,
+            is_root_frame,
         );
     }
     // Isolated worlds are session-wide (single V8 context shared across