[Bug] getCursor Inside MapboxOverlay Always Receives isDragging as false

Description

There seems to be an issue with the getCursor function inside MapboxOverlay. The isDragging parameter passed to getCursor always evaluates to false, regardless of whether the map is being dragged or not. This is incorrect and prevents proper updates to the cursor during map dragging.

here is my code

map = new maplibregl.Map({
    container: mapElement.value,
    style: darkmode.isDark ? styleDarkMap : styleMap,
    center: [INITIAL_VIEW_STATE.longitude!, INITIAL_VIEW_STATE.latitude!],
    zoom: INITIAL_VIEW_STATE.zoom,
    bearing: INITIAL_VIEW_STATE.bearing,
    pitch: INITIAL_VIEW_STATE.pitch,
    transformRequest: (url: any, resourceType: any) => {
      if (isMapboxURL(url)) {
        return transformMapboxUrl(url, resourceType, token)
      }
      // Do any other transforms you want
      return {
        url,
        // credentials: "include" // Include cookies for cross-origin requests
      }
    },
  })

  deckOverlay = new MapboxOverlay({
    getCursor: ({ isDragging }) => {
      console.log(isDragging)
      return 'pointer'
    },
  })

  map.addControl(deckOverlay)

Flavors

• Script tag
• React
• Python/Jupyter notebook
• MapboxOverlay
• GoogleMapsOverlay
• CartoLayer
• ArcGIS

Expected Behavior

The isDragging value should reflect whether the map is being dragged. When the map is dragged, isDragging should be true. Otherwise, it should be false.

Steps to Reproduce

1- Initialize a maplibregl.Map with a MapboxOverlay control.
2 - Implement a getCursor function that logs or inspects the isDragging parameter.
3 - Interact with the map by dragging it.
4 -Notice that isDragging always logs as false, even during dragging.

Environment

• Framework version: deck.gl@9.0.36
• Browser: Chrome 131.0.6778.86
• OS: window 10

Logs

No response

Start by tracing MapboxOverlay's getCursor handling and how map drag state is passed into the callback; no source file or test is named in the issue. Reproduce the behavior with the provided MapLibre setup, then verify that isDragging is true during map dragging and false otherwise with a focused regression test.