Meilisearch: require all query terms to be matched

Previously only the first term had to be matched. That default meilisearch
behavior makes sense for e.g. some kind of autocomplete to find and select
a single result. But for filtering issues it means you can't narrow down
results by adding more terms.

This is also more consistent with other indexers and GitHub.

modules/indexer/issues/meilisearch/meilisearch.go

@@ -215,6 +215,7 @@ func (b *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 		Limit:  int64(limit),
 		Offset: int64(skip),
 		Sort:   sortBy,
+		MatchingStrategy: "all",
 	})
 	if err != nil {
 		return nil, err