fix: page.goto should support pages with self requests (#1391) (#1781)

This patch fixes `page.goto` for websites that re-request document URL with javascript.

Fixes #1391.

test/assets/self-request.html

@@ -0,0 +1,5 @@
+<script>
+var req = new XMLHttpRequest();
+req.open('GET', '/self-request.html');
+req.send(null);
+</script>