fix

Author: scanhex12

tests/queries/0_stateless/03399_sparse_grams.reference

@@ -43,5 +43,5 @@
 --- Maximal ngram length
 ['hel','ell','hell','llo','lo ','o w',' wo','o wo','wor','orl','worl','rld','ld ','d h',' he','hel','ell','hell','llo','lo ','o w',' wo','o wo','wor','orl','worl','rld']
 [2506577493,2572385374,1215715430,2800275065,4138075256,1289510601,3049124177,3657359374,4264248681,4001372542,591022938,2272946417,9342067,4091546102,3248815857,2506577493,2572385374,1215715430,2800275065,4138075256,1289510601,3049124177,3657359374,4264248681,4001372542,591022938,2272946417]
-[]
-[]
+['a😊Ω','😊Ω𐍈','Ω𐍈界','😊Ω𐍈界','𐍈界𝄞','界𝄞b','𝄞bЦ','bЦ⛄']
+[240971666,1073802831,1853348098,3515974530,466418078,808647385,2444771819,1224532659]