[v11.3.x] Geomap: Fix tooltip positioning when screen is scrolled (#94842)

Geomap: Fix tooltip positioning when screen is scrolled (#94827)

* account for y-scrolling when positioning geomap tooltip

* remove config import

(cherry picked from commit 241dca57cf)

Co-authored-by: Ashley Harrison <ashley.harrison@grafana.com>

public/app/plugins/panel/geomap/utils/tooltip.ts

@@ -45,7 +45,7 @@ export const pointerMoveListener = (evt: MapBrowserEvent<MouseEvent>, panel: Geo
 
   const { hoverPayload } = panel;
   hoverPayload.pageX = mouse.pageX;
-  hoverPayload.pageY = mouse.pageY;
+  hoverPayload.pageY = mouse.pageY - window.scrollY;
   hoverPayload.point = {
     lat: hover[1],
     lon: hover[0],