tauri-runtime-servocat 3.17.0

Servo-replacement runtime for Tauri: wires html-cat, css-cat, dom-cat, layout-cat, paint-cat, net-cat, boa-cat, ecma-runtime-cat, and web-api-cat into a single rendering + scripting pipeline. v3.17.0 pulls in the web-api-cat 0.7 chapter (boa-cat 0.7 -> 0.7.1, web-api-cat 0.6 -> 0.7.4): user-supplied webview scripts now have addEventListener / removeEventListener / dispatchEvent with bubble dispatch up the parent chain, localStorage / sessionStorage Storage-shaped objects, Promise-based fetch (`await fetch(url)` + `r.text()` + HTTPS via rustls), and an inline `style="..."` round-trip that reaches layout-cat through extract_document. No tauri-runtime-servocat source change beyond the manifest -- the dep bump exposes the new surface to scripts uniformly.