🐛 Fix port_connection_dialog not being scrollable

lib/port_connection_dialog.dart

@@ -106,26 +106,28 @@ class _PortConnectionState extends State<PortConnectionDialog> {
   Widget build(BuildContext context) {
     return SizedBox(
       width: min(MediaQuery.of(context).size.width, 400),
-      child: Column(
-        mainAxisSize: MainAxisSize.min,
-        crossAxisAlignment: CrossAxisAlignment.stretch,
-        children: (connections
-                .map((elem) => PortConnectionCard(
-                    sourcePort: elem.$1,
-                    connection: elem.$2,
-                    isOutput: widget.isOutput,
-                    mixerState: widget.mixerState,
-                    sendAction: widget.sendAction) as Widget)
-                .toList()) +
-            <Widget>[
-              const SizedBox(height: 10),
-              TextButton.icon(
-                  onPressed: () {
-                    widget.showNewConnectionDialog(context);
-                  },
-                  icon: const Icon(Icons.add),
-                  label: const Text("New connection"))
-            ],
+      child: SingleChildScrollView(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: (connections
+                  .map((elem) => PortConnectionCard(
+                      sourcePort: elem.$1,
+                      connection: elem.$2,
+                      isOutput: widget.isOutput,
+                      mixerState: widget.mixerState,
+                      sendAction: widget.sendAction) as Widget)
+                  .toList()) +
+              <Widget>[
+                const SizedBox(height: 10),
+                TextButton.icon(
+                    onPressed: () {
+                      widget.showNewConnectionDialog(context);
+                    },
+                    icon: const Icon(Icons.add),
+                    label: const Text("New connection"))
+              ],
+        ),
       ),
     );
   }