Deprecate infinite_scroll_posts_where hook

projects/plugins/jetpack/modules/infinite-scroll/infinity.php

@@ -772,16 +772,18 @@ public function query_time_filter( $where, $query ) {
 			 * will always return results prior to (descending sort)
 			 * or before (ascending sort) the last post date.
 			 *
+			 * @deprecated $$next-version$$
+			 *
 			 * @module infinite-scroll
 			 *
 			 * @param string $clause SQL Date query.
 			 * @param object $query Query.
 			 * @param string $operator @deprecated Query operator.
 			 * @param string $last_post_date @deprecated Last Post Date timestamp.
 			 */
-			$operator       = 'ASC' === $_REQUEST['query_args']['order'] ? '>' : '<'; // phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.ValidatedSanitizedInput.InputNotValidated -- no changes to the site.
-			$last_post_date = isset( $_REQUEST['last_post_date'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['last_post_date'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- no changes to the site.
-			$where         .= apply_filters( 'infinite_scroll_posts_where', $clause, $query, $operator, $last_post_date );
+			$operator       = '<';
+			$last_post_date = isset( $_REQUEST['last_post_date'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['last_post_date'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- no changes to the site
+			$where         .= apply_filters_deprecated( 'infinite_scroll_posts_where', array( $clause, $query, $operator, $last_post_date ), '$$next-version$$', '' );
 		}
 
 		return $where;