Merge remote-tracking branch 'carlosdelest/feature/esql-knn-function-minimal-support' into feature/esql-knn-function-minimal-support

# Conflicts:
#	x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/vector/Knn.java

Author: carlosdelest

x-pack/plugin/esql/src/internalClusterTest/java/org/elasticsearch/xpack/esql/plugin/KnnFunctionIT.java

@@ -48,8 +48,8 @@ public void testKnnDefaults() {
                 assertEquals(i, row.getFirst());
                 @SuppressWarnings("unchecked")
                 // Vectors should be the same
-                List<Double> floats = (List<Double>)row.get(1);
-                for(int j = 0; j < floats.size(); j++) {
+                List<Double> floats = (List<Double>) row.get(1);
+                for (int j = 0; j < floats.size(); j++) {
                     assertEquals(floats.get(j).floatValue(), indexedVectors.get(i).get(j), 0f);
                 }
                 var score = (Double) row.get(2);

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/planner/PlannerUtils.java

@@ -301,8 +301,8 @@ public static ElementType toElementType(DataType dataType, MappedFieldType.Field
             case PARTIAL_AGG, AGGREGATE_METRIC_DOUBLE -> ElementType.COMPOSITE;
             // Can't throw IAE as this is used to estimate row size
             case DENSE_VECTOR -> ElementType.NULL;
-            case SHORT, BYTE, DATE_PERIOD, TIME_DURATION, OBJECT, FLOAT, HALF_FLOAT, SCALED_FLOAT ->
-                throw EsqlIllegalArgumentException.illegalDataType(dataType);
+            case SHORT, BYTE, DATE_PERIOD, TIME_DURATION, OBJECT, FLOAT, HALF_FLOAT, SCALED_FLOAT -> throw EsqlIllegalArgumentException
+                .illegalDataType(dataType);
         };
     }