[FIX] Livechat iframe allow microphone and camera (#9956)

Co-authored-by: Guilherme Gazzo <guilhermegazzo@gmail.com>

packages/rocketchat-livechat/assets/rocket-livechat.js

@@ -695,7 +695,7 @@
 		chatWidget.dataset.state = 'closed';
 		chatWidget.className = 'rocketchat-widget';
 		chatWidget.innerHTML = '<div class="rocketchat-container" style="width:100%;height:100%">' +
-			'<iframe id="rocketchat-iframe" src="' + url + '" style="width:100%;height:100%;border:none;background-color:transparent" allowTransparency="true"></iframe> ' +
+			'<iframe id="rocketchat-iframe" src="' + url + '" style="width:100%;height:100%;border:none;background-color:transparent" allowTransparency="true" allow="microphone; camera"></iframe> ' +
 			'</div><div class="rocketchat-overlay"></div>';
 
 		chatWidget.style.position = 'fixed';