validate before checking for nil subscription

Author: cardoso

Rocket.Chat/Controllers/Base/Main/MainSplitViewControllerShortcuts.swift

@@ -127,23 +127,23 @@ extension MainSplitViewController {
     }
 
     @objc func shortcutUpload(_ command: UIKeyCommand) {
-        guard chatViewController?.subscription != nil else {
+        guard chatViewController?.subscription?.validated() != nil else {
             return
         }
 
         chatViewController?.toggleUpload()
     }
 
     @objc func shortcutRoomActions(_ command: UIKeyCommand) {
-        guard chatViewController?.subscription != nil else {
+        guard chatViewController?.subscription?.validated() != nil else {
             return
         }
 
         chatViewController?.toggleActions()
     }
 
     @objc func shortcutRoomMessageSearch(_ command: UIKeyCommand) {
-        guard chatViewController?.subscription != nil else {
+        guard chatViewController?.subscription?.validated() != nil else {
             return
         }