[Combobox Item] - update selection icons

[ashetland]

Check existing issues

• [X] I have checked for existing issues to avoid duplicates

Description

Now that Combobox Items have a description prop and slots for additional content (pr #9771, issue #9322), the selection icons should be updated to better serve more content-rich setups (see List (codepen) (also issue #9174 for single-select icons in List) and Table (codepen))

Acceptance Criteria

• [ ] Update single-select icon to circle (idle) / circle-inset-large (selected)
• [ ] Update multiple-select icon to square (idle) / check-square-f (selected)
• [ ] Idle icons should be color.border.input

Figma reference will all scales.

Before/after example:

Relevant Info

Should be implemented before or alongside issue #2311.

Which Component

Combobox Item

Example Use Case

No response

Priority impact

impact - p2 - want for an upcoming milestone

Calcite package

• [X] @esri/calcite-components
• [ ] @esri/calcite-components-angular
• [ ] @esri/calcite-components-react
• [ ] @esri/calcite-design-tokens
• [ ] @esri/eslint-plugin-calcite-components

Esri team

Calcite (design)

[github-actions[bot]]

cc @geospatialem, @brittneytewks