…experimental

…-instant-search into experimental

Using `AisSortBy` doesn't re-render the `@template` when `searchType` changes more than once. This commit takes another approach by using a `ComboBox` to switch between `searchType` and show a completely new search instance when the search type is changed.

conditionally show each refinement list

- Support for Discourse category search priority

- Group / TL refinements for user search

- Chat search highlight

- Category ID field for posts / topics

- Only index public groups for users

Also, `.search()` being called is not necessary here as setQuery is sufficient across sort modes as the search auto updates anyways

- Replaces deprecated `searchFunction` with `onStateChange`
- Implements service to have easy access to `searchInstance` and `helper`
- Debounces hyde/hybrid/semantic search modes to 60s to prevent issues
- Re-introduces hyde and semantic into search mode picker
- `setUiState` instead of `search()` ensures infinite hits "Load More" button does not break

This fixes an issue where you get an error if you do a topic search, then switch to chat messages and click the advanced filters button `this.args.uiState` is null.

This also removes the `currentRefinements` data attribute. It's not currently being used in CSS and conditionally showing the refinements would be better done in the JS instead of CSS anyways.

…colors