Revert test

Author: thecoop

server/src/test/java/org/elasticsearch/index/mapper/vectors/DenseVectorFieldMapperTests.java

@@ -2894,14 +2894,14 @@ public void testKnnBBQHNSWVectorsFormat() throws IOException {
             assertThat(codec, instanceOf(LegacyPerFieldMapperCodec.class));
             knnVectorsFormat = ((LegacyPerFieldMapperCodec) codec).getKnnVectorsFormatForField("field");
         }
-        String expectedString = "ES93HnswBinaryQuantizedVectorsFormat(name=ES93HnswBinaryQuantizedVectorsFormat, maxConn="
+        String expectedString = "ES818HnswBinaryQuantizedVectorsFormat(name=ES818HnswBinaryQuantizedVectorsFormat, maxConn="
             + m
             + ", beamWidth="
             + efConstruction
-            + ", writeFlatVectorFormat=ES93BinaryQuantizedVectorsFormat("
-            + "name=ES93BinaryQuantizedVectorsFormat, "
-            + "flatVectorScorer=ES818BinaryFlatVectorsScorer(nonQuantizedDelegate=DefaultFlatVectorScorer";
-        assertThat(knnVectorsFormat.toString(), startsWith(expectedString));
+            + ", flatVectorFormat=ES818BinaryQuantizedVectorsFormat("
+            + "name=ES818BinaryQuantizedVectorsFormat, "
+            + "flatVectorScorer=ES818BinaryFlatVectorsScorer(nonQuantizedDelegate=DefaultFlatVectorScorer())))";
+        assertEquals(expectedString, knnVectorsFormat.toString());
     }
 
     public void testKnnBBQIVFVectorsFormat() throws IOException {