## Objective

- Provide initial preview layout information for the picker delegate.
This ensures that when match items with different styles need to be
displayed under horizontal or vertical layouts, they render correctly on
the first display.

## Solution

- Pass the initial layout information to the delegate in the picker
constructor


## Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable


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Release Notes:

- N/A