plugins/tileseditor: clarify wording in "split the view" buttons

Apparently people have differing ideas of what "vertically" and
"horizontally" mean, and some feel that this wording contradicts the
icon.

That's not accurate, but the wording is admittedly a little a bit
ambiguous. We can clarify this by using super duper explicit
terminology that always matches the icon.

BUG: 475103
FIXED-IN: 6.1

src/plugins/tileseditor/qml/TileDelegate.qml

@@ -164,14 +164,14 @@ Item {
                 id: splitButton
                 Layout.fillWidth: true
                 icon.name: "view-split-left-right"
-                text: i18nd("kwin","Split Horizontally")
+                text: i18nd("kwin","Split Left/Right")
                 display: parent.compact ? PlasmaComponents.Button.IconOnly : PlasmaComponents.Button.TextBesideIcon
                 onClicked: tile.split(KWinComponents.Tile.Horizontal)
             }
             PlasmaComponents.Button {
                 Layout.fillWidth: true
                 icon.name: "view-split-top-bottom"
-                text: i18nd("kwin","Split Vertically")
+                text: i18nd("kwin","Split Top/Bottom")
                 display: parent.compact ? PlasmaComponents.Button.IconOnly : PlasmaComponents.Button.TextBesideIcon
                 onClicked: tile.split(KWinComponents.Tile.Vertical)
             }