Support menu key for room/member lists currentItem

Allow opening context menu for AccountDelegate, RoomDelegate and
MemberDelegate by selecting an item with up/down (when focusing filter
field) and pressing the menu key.

src/gui/MainPane/BottomBar.qml

@@ -55,6 +55,10 @@ Rectangle {
                 if (window.settings.clearRoomFilterOnEnter) text = ""
             }
 
+            Keys.onMenuPressed:
+                if (roomList.currentItem)
+                    roomList.currentItem.doRightClick(false)
+
             Keys.onEscapePressed: {
                 mainPane.toggleFocus()
                 if (window.settings.clearRoomFilterOnEscape) text = ""

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

@@ -43,6 +43,9 @@ HColumnLayout {
                 currentItem.leftClicked()
                 currentItem.clicked()
             }
+
+            Keys.onMenuPressed:
+                if (currentItem) currentItem.doRightClick(false)
         }
 
         Layout.fillWidth: true