Verifies that Overlay.setShowScrollSnapOverlays works.
Overlay not rendered:

Overlay rendered:
{
  "name": "drawScrollSnapHighlight",
  "data": {
    "snapport": [
      "M",
      8,
      8,
      "L",
      143,
      8,
      "L",
      143,
      158,
      "L",
      8,
      158,
      "Z"
    ],
    "paddingBox": [
      "M",
      8,
      8,
      "L",
      143,
      8,
      "L",
      143,
      158,
      "L",
      8,
      158,
      "Z"
    ],
    "snapAreas": [
      {
        "path": [
          "M",
          18,
          8,
          "L",
          113,
          8,
          "L",
          113,
          103,
          "L",
          18,
          103,
          "Z"
        ],
        "borderBox": [
          "M",
          18,
          8,
          "L",
          113,
          8,
          "L",
          113,
          103,
          "L",
          18,
          103,
          "Z"
        ],
        "alignBlock": "start"
      },
      {
        "path": [
          "M",
          18,
          113,
          "L",
          113,
          113,
          "L",
          113,
          208,
          "L",
          18,
          208,
          "Z"
        ],
        "borderBox": [
          "M",
          18,
          113,
          "L",
          113,
          113,
          "L",
          113,
          208,
          "L",
          18,
          208,
          "Z"
        ],
        "alignBlock": "center"
      },
      {
        "path": [
          "M",
          18,
          218,
          "L",
          113,
          218,
          "L",
          113,
          313,
          "L",
          18,
          313,
          "Z"
        ],
        "borderBox": [
          "M",
          18,
          218,
          "L",
          113,
          218,
          "L",
          113,
          313,
          "L",
          18,
          313,
          "Z"
        ],
        "alignBlock": "end"
      }
    ],
    "snapportBorder": {
      "color": "rgb(0, 0, 0)",
      "pattern": "solid"
    },
    "snapAreaBorder": {
      "color": "rgb(0, 0, 0)",
      "pattern": "solid"
    },
    "scrollMarginColor": "rgb(0, 0, 0)",
    "scrollPaddingColor": "rgb(0, 0, 0)"
  }
}