[Combobox] Unexpected keyboard navigation with arrow keys

[macandcheese]

Actual Behavior

When using Combobox in Multiple selection mode, navigating through the Chips with arrow keys produces unexpected behavior.

Using the arrows to navigate after entering Chip area with keyboard, focuses the chip in the wrong direction. Additionally, at some times the placeholder text disappears

Expected Behavior

I would expect the arrow keys to navigate correctly, and not have the placeholder text occasionally disappear as I interact with the chip focus with arrows.

Reproduction Sample

https://codepen.io/mac_and_cheese/pen/KKGKbpy?editors=1000

Reproduction Steps

1. Open Codepen
2. Use Tab to focus Combobox - first chip's close button will be focused first.
3. Use Tab again to focus the second chip's close button.
4. Use Left Arrow - expect to see the first chip's close button focused.
5. Instead, the third chip's close button is focused.
6. Notice that the placeholder text occasionally disappears while using keyboard arrows

Reproduction Version

1.2.0

Relevant Info

Screen.Recording.2023-04-06.at.7.37.51.PM.mov

Regression?

No response

Priority impact

p2 - want for current milestone

Impact

No response

Esri team

Calcite (design)

[geospatialem]

Related and could be approached together, possibly with chip-group as a refactor #6776 + #6777