Fix wrong guests access option status

Before this change after enabling and disabling the guest access option,
the option stays enabled.

Resolves: #2378

Signed-off-by: Tim Krüger <t@timkrueger.me>

app/src/main/java/com/nextcloud/talk/conversation/info/GuestAccessHelper.kt

@@ -58,6 +58,8 @@ class GuestAccessHelper(
             if (conversation.hasPassword) {
                 guestAccessPasswordSwitch.isChecked = true
             }
+        } else {
+            guestAccessAllowSwitch.isChecked = false
         }
 
         binding.guestAccessView.guestAccessAllowSwitch.setOnClickListener {