ESR102: http.spdy pref name change

000-tor-browser.js

• pref("network.http.spdy.allow-push", false); - from #27127 (closed)
• renamed to network.http.http2.allow-push
• source: FF100+ https://bugzilla.mozilla.org/1752621
• label please: FF102-esr
• attn: @pierov