Fix tests

Author: carlosdelest

x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/analysis/AnalyzerTests.java

@@ -2376,7 +2376,7 @@ public void testDenseVectorImplicitCasting() {
         Analyzer analyzer = analyzer(loadMapping("mapping-dense_vector.json", "vectors"));
 
         var plan = analyze("""
-            from test | where knn(vector, [0.342, 0.164, 0.234])
+            from test | where knn(vector, [0.342, 0.164, 0.234], 10)
             """, "mapping-dense_vector.json");
 
         var limit = as(plan, Limit.class);

x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/optimizer/LocalPhysicalPlanOptimizerTests.java

@@ -1367,8 +1367,8 @@ public void testKnnOptionsPushDown() {
 
         String query = """
             from test
-            | where KNN(dense_vector, [0.1, 0.2, 0.3],
-                { "k": 5, "similarity": 0.001, "num_candidates": 10, "rescore_oversample": 7, "boost": 3.5 })
+            | where KNN(dense_vector, [0.1, 0.2, 0.3], 5,
+                { "similarity": 0.001, "num_candidates": 10, "rescore_oversample": 7, "boost": 3.5 })
             """;
         var analyzer = makeAnalyzer("mapping-all-types.json");
         var plan = plannerOptimizer.plan(query, IS_SV_STATS, analyzer);