{% schema %} checking of t: translations only seems to be checking name properties.

[charlespwd]

Describe the bug
A setting of type select should throw errors if the label of its options don't exist. Right now we have no support for those.

Looks like that's also a problem for a preset's category field

Source

{% schema %}
{
  "name": "t:general.group",
  "blocks": [{ "type": "@theme" }],
  "settings": [
    {
      "type": "select",
      "id": "layout_direction",
      "label": "t:labels.layout_direction",
      "options": [
        { "value": "group--horizontal", "label": "t:options.direction.horizontal" },
        { "value": "group--vertical", "label": "t:options.direction.vertical" }
      ],
      "default": "group--vertical"
    },
    {
      "type": "select",
      "id": "alignment",
      "label": "t:labels.alignment",
      "options": [
        { "value": "group--left-aligned", "label": "t:options.alignment.left" },
        { "value": "group--center-aligned", "label": "t:options.alignment.center" },
        { "value": "group--right-aligned", "label": "t:options.alignment.right" }
      ],
      "visible_if": "{{ block.settings.layout_direction == 'group--vertical' }}"
    },
    {
      "type": "range",
      "id": "padding",
      "label": "t:labels.padding",
      "default": 0,
      "min": 0,
      "max": 100,
      "step": 1,
      "unit": "px",
    }
  ],
  "presets": [
    {
      "name": "t:general.column",
      "category": "t:categories.alignment.left",
      "settings": {
        "layout_direction": "group--vertical",
        "alignment": "group--left-aligned",
        "padding": 0
      }
    },
    {
      "name": "t:general.row",
      "category": "t:categories.layout",
      "settings": {
        "layout_direction": "group--horizontal",
        "padding": 0
      }
    }
  ]
}
{% endschema %}

Expected behaviour
I got a couple of things in there that should show errors because the labels don't exist.

Actual behaviour
name properties seem to be linted OK.
label inside select options doesn't.
category inside preset doesn't`

Debugging information

• OS [e.g. Windows, Mac, Linux]
• OS Version
• Theme Check Version [e.g. 0.1.0]

Additional context
Add any other context about the problem here.