Position is broken on Retina display or when node is in a frame.

[videopilot]

Tested on Mac, Blender 4.5.4 and 5.1 RC. Seems the positions needs to be multiplied by bpy.context.preferences.system.ui_scale

Also, if the image texture node is in a frame, the dimensions label is not positioned.

This fixes both here at line 165-ish:

    abs_x, abs_y = node.location.x, node.location.y
    parent = node.parent
    ui_scale =  bpy.context.preferences.system.ui_scale

    while parent:
        abs_x += parent.location.x
        abs_y += parent.location.y
        parent = parent.parent
    vx = (abs_x + offset_x) * ui_scale
    vy = (abs_y + offset_y) * ui_scale
    rx, ry = view2d.view_to_region(vx, vy, clip=False)