Add drag handle mouse cursor

[AdRiley]

When my mouse is hovered over an area that I can use to drag a component round (component icon/drag halo) it should change to a drag cursor so that I know.

[farmaazon]

Refinement:

• Node background should set "grab". Every widget which has different interaction should change cursor by itself (clicking is more important than drag).
• When moving node, the cursor should be grabbing
• Vector Editor handle should use the same cursor.
• To consider: maybe change cursor to grabbing only when actually dragging node? Because clicking on a node can do other actions than just dragging.

[enso-bot]

Adam Obuchowicz reports a new STANDUP for today (2024-05-17):

Progress: Gave up with integrating react tooltips, instead took two next small tasks: changing cursor pointer shape on node and drag, and icon highlight. The first is done: did two versions to check what is better. Icons are also almost done, just need testing all icons in our app (as I refactored a bit to make general SvgButton component). It should be finished by 2024-05-24.

Next Day: Next day I will be working on the #9904 task. Finish hovering icons and start next task.