Topic text areas: focus next item on tab

TODO.md

@@ -1,6 +1,5 @@
 # TODO
 
-- text area tab handling
 - fix cursor over field
 - update room highlight when creating new room
 - keyerror when forgetting room while loading members

src/gui/Pages/AddChat/CreateRoom.qml

@@ -94,6 +94,7 @@ HBox {
         HTextArea {
             width: parent.width
             placeholderText: qsTr("This room is about...")
+            focusItemOnTab: publicCheckBox
         }
     }
 

src/gui/Pages/Chat/RoomPane/SettingsView.qml

@@ -112,6 +112,11 @@ HBox {
             placeholderText: qsTr("This room is about...")
             defaultText: chat.roomInfo.plain_topic
             enabled: chat.roomInfo.can_set_topic
+
+            focusItemOnTab:
+                encryptCheckBox.checked ?
+                requireInviteCheckbox :
+                encryptCheckBox
         }
     }