feat: Switch to unified plan on chrome by default unless explicitly disabled.

modules/xmpp/JingleSessionPC.js

@@ -341,7 +341,9 @@ export default class JingleSessionPC extends JingleSession {
                     || (browser.isChromiumBased()
 
                         // Provide a way to control the behavior for jvb and p2p connections independently.
-                        && this.isP2P ? options.p2p?.enableUnifiedOnChrome : options.enableUnifiedOnChrome));
+                        && this.isP2P
+                        ? options.p2p?.enableUnifiedOnChrome ?? true
+                        : options.enableUnifiedOnChrome ?? true));
 
         if (this.isP2P) {
             // simulcast needs to be disabled for P2P (121) calls