Deprecate unused "rowsExpected" property of SqlQuery for removal

See gh-34526

Signed-off-by: Yanming Zhou <zhouyanming@gmail.com>

spring-jdbc/src/main/java/org/springframework/jdbc/object/SqlQuery.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -84,14 +84,18 @@ public abstract class SqlQuery<T> extends SqlOperation {
 	 * Set the number of rows expected.
 	 * <p>This can be used to ensure efficient storage of results. The
 	 * default behavior is not to expect any specific number of rows.
+	 * @deprecated since 6.2.4 with no replacement; it's for internal use only
 	 */
+	@Deprecated(since = "6.2.4", forRemoval = true)
 	public void setRowsExpected(int rowsExpected) {
 		this.rowsExpected = rowsExpected;
 	}
 
 	/**
 	 * Get the number of rows expected.
+	 * @deprecated since 6.2.4 with no replacement; it's for internal use only
 	 */
+	@Deprecated(since = "6.2.4", forRemoval = true)
 	public int getRowsExpected() {
 		return this.rowsExpected;
 	}