Dropdown: item slot

[Spark450]

Acceptance Criteria:

1. The ability to have a slot for Dropdown Items that can be filled with anything (HTML)
2. This needs to be supported for the filterable property (Combobox)
   • A property would likely be required to control search parameters
3. 2 examples given in documentation - one for base dropdown and one using filterable property
4. Accessibility:
   • Expectation for accessibility would be to read the HTML content like any other HTML content (top to bottom, left to right)
5. Once issue has passed code review, inform @twjeffery so that he can prepare the Figma assets for release

Design Jira issue

Figma design

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Is your feature request related to a problem? Please describe

To be able to display dropdown item slots with multiple pieces of metadata within a dropdown menu

Describe the solution you'd like

A flexible slot "area" where different types of formatted text, icons, and other assets can be placed in a way that makes sense for a variety of given contexts.

Requirements: -Any/all text included in the slot can be filterable for the combo box version -Multiple line support

Provide evidence this is a needed component

Describe alternatives you've considered

No response

Do you have anything already created for this that we can use?

yes

Are you currently using this proposal inside your own service

no

Are you able to assist to bring the feature to reality?

no

Additional context

No response