Ceil tooltip popup size so right/bottom borders render

Text.implicitWidth/Height can be fractional. Passing those values
straight to the PopupWindow rounded the Wayland surface down, clipping
the 1px right/bottom border of the bubble.

default/quickshell/omarchy-shell/plugins/bar/Bar.qml

@@ -929,8 +929,8 @@ Item {
 
       visible: root.tooltipShown && root.tooltipTarget !== null && root.tooltipText !== ""
       color: "transparent"
-      implicitWidth: tooltipBubble.implicitWidth
-      implicitHeight: tooltipBubble.implicitHeight
+      implicitWidth: Math.ceil(tooltipBubble.implicitWidth)
+      implicitHeight: Math.ceil(tooltipBubble.implicitHeight)
 
       anchor {
         id: tooltipAnchor