Use Feedback class for export data consistency

Instead of raw meta queries, use the same Feedback class that DataViews
uses to ensure consistent data formatting and proper field population.

Author: lezama

projects/packages/forms/src/contact-form/class-contact-form-endpoint.php

@@ -1197,22 +1197,25 @@ public function export_responses( $request ) {
 		$all_fields = array();
 
 		foreach ( $feedback_posts as $post ) {
+			$feedback = Feedback::get( $post->ID );
+			if ( ! $feedback ) {
+				continue;
+			}
+
 			$post_data = array(
 				'ID'           => $post->ID,
 				'Date'         => get_the_date( 'Y-m-d H:i:s', $post ),
-				'Author Name'  => get_post_meta( $post->ID, '_feedback_author', true ),
-				'Author Email' => get_post_meta( $post->ID, '_feedback_author_email', true ),
-				'Author URL'   => get_post_meta( $post->ID, '_feedback_author_url', true ),
-				'IP Address'   => get_post_meta( $post->ID, '_feedback_ip', true ),
+				'Author Name'  => $feedback->get_author(),
+				'Author Email' => $feedback->get_author_email(),
+				'Author URL'   => $feedback->get_author_url(),
+				'IP Address'   => $feedback->get_ip(),
 				'Contact Form' => get_the_title( $post->post_parent ),
 			);
 
-			$all_meta = get_post_meta( $post->ID );
-			foreach ( $all_meta as $key => $value ) {
-				if ( strpos( $key, '_' ) === 0 ) {
-					continue;
-				}
-				$post_data[ $key ] = is_array( $value ) && count( $value ) === 1 ? $value[0] : ( is_array( $value ) ? implode( ', ', $value ) : $value );
+			// Add all form fields from the feedback
+			$form_fields = $feedback->get_all_fields();
+			foreach ( $form_fields as $field => $value ) {
+				$post_data[ $field ] = $value;
 			}
 
 			$all_fields = array_merge( $all_fields, array_keys( $post_data ) );