fix: resizable viewer's broadcasting screen

Author: mohitgauniyal

client/css/app.css

@@ -1209,7 +1209,7 @@ input[type=text]:focus {
     z-index: 500;
     display: flex;
     flex-direction: column;
-    overflow: hidden;
+    overflow: auto;
     resize: both;
     min-width: 280px;
     min-height: 200px;