Similar to T267524: Rename css-sanitizer's ‘Match’ class for PHP 8, CirrusSearch uses Elastica\Query\Match which will cause issues with PHP 8.0 support
Looking Upstream https://github.com/ruflin/Elastica/blob/acce6df/src/Query/Match.php has already been renamed to Elastica\Query\MatchQuery
No release yet, but 7.1.0 maybe coming.
Backport into 6.x requested at https://github.com/ruflin/Elastica/issues/1879
Similar instance in other extensions/code: T268863: Translate uses Elastica's Match class. T268864: WikibaseCirrusSearch uses Elastica's Match class, T268865: WikibaseLexemeCirrusSearch uses Elastica's Match class, T268866: WikibaseMediaInfo uses Elastica's Match class