ElyMark: the print page runs none of the document's scripts (M-15)

WebView::open_inert makes a browser with JavaScript off; ElyMark's
staged print page uses it. webprobe opens one page both ways: the
scripted copy must report, the inert one never.

The CEF router drops a query that lacks onFailure, and queries made
before the router is ready are lost; agents.md says so.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/fixtures/web/inert.html

@@ -0,0 +1,11 @@
+<!doctype html>
+<meta charset="utf-8">
+<p>A page shown, never run.</p>
+<script>
+  // Asks until answered: the bridge comes up late.
+  const ask = () => {
+    const again = setTimeout(ask, 200)
+    window.elyQuery?.({ request: "ran", onSuccess: () => clearTimeout(again), onFailure: () => {} })
+  }
+  ask()
+</script>