Improved#3643 Fuzzy Match return distances for multiple matches(Top-K/separate rows)

[leehaut]

Fix #3643

Summary

Previously, Fuzzy Match only returned a measure (distance / similarity) when Get closer value was enabled. In multi-match mode, matches were concatenated without their distances.

This change replaces the closer-value checkbox with an explicit Match mode, and supports retrieving multiple matches together with measure values:

Match mode	Behavior
Closest match	Single best match (previous closer-value behavior)
All matches (separate rows)	One output row per match, ranked best-first, limited by Top-K (recommended)
All matches (concatenated)	Matches and measures joined with the values separator (literal #3643 request)

Details

• Add MatchMode (closest / all_rows / all_concat) with backward compatibility for existing closervalue pipelines
• Add Max matches Top-K (default 10, hard-capped at 100) using a bounded priority heap (no full in-memory sort of all candidates)
• Value field is available in all modes; concatenated mode returns measures as a separator-aligned string list
• Additional lookup fields remain available for closest and separate-rows modes
• Update UI, i18n (en_US / zh_CN), and user docs (fuzzymatch.adoc, joins/lookups guide)