Closes#25045
With the setting `"use_system_path_prompts": false`, previously, if the
completion target was a directory, no separator would be added after it,
requiring us to manually append a `/` or `\`. Now, if the completion
target is a directory, a `/` or `\` will be automatically added. On
Windows, both `/` and `\` are considered valid path separators.
https://github.com/user-attachments/assets/0594ce27-9693-4a49-ae0e-3ed29f62526a
Release Notes:
- N/A
For both the strings and paths multithreaded matching it would still
aggregate the response even though it is unneeded. It now checks cancel.
In the paths matcher, cancel is now checked within the loop, since it
was calling `match_candidates` even though no further results would be
computed.
Release Notes:
- N/A
* Removes `max_results` from the matcher interface as this is better
dealt with in consumers once all results are known. The current
implementation was quite inefficient as it was using binary search to
find insertion points and then doing an insert which copies the entire
suffix each time.
* There was a corner case where if the binary search found a match
candidate with the same score, it was dropped. Now fixed.
* Uses of `util::extend_sorted` when merging results from worker threads
also repeatedly uses binary search and insertion which copies the entire
suffix. A followup will remove that and its usage.
* Adds `util::truncate_to_bottom_n_sorted_by` which uses quickselect +
sort to efficiently get a sorted count limited result.
* Improves interface of Matcher::match_candidates by providing the match
positions to the build function. This allows for removal of the `Match`
trait. It also fixes a bug where the Match's own Ord wasn't being used,
which seems relevant to PathMatch for cases where scores are the same.
Release Notes:
- N/A
