* Editor: Fixes issue where only entire lines were being copied
Closes#18768
* Simplifies onCopy handler and factors out logic for easier testing
Also adds tests to verify behaviour
* Fixes several usability issues with QueryField component
- Can now indent with tab and `mod+[`, `mod+]`
- Copy/Cut preserves new lines, and paste correctly splits blocks now
- Adds support for selection hotkeys
* Explore/Prometheus: More consistently allows for multi-line queries
Allows a user to hit shift+enter to create a new line in the query field, even
when the autocomplete suggestions are displayed.
Also fixes an issue where a new line was inserted when selecting a suggestion
Closes#18341
* Fixes behavior where query wasn't running on pressing Enter
Also adds test to verify this behavior
