Update PHP Code Sniffer suppression annotations

This commit updates the PHP Code Sniffer suppression annotations in the apple-exporter components class. Previously, there was an incorrect ignore annotation `VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable` in `node_matches` method which has now been replaced with `Generic.CodeAnalysis.UnusedFunctionParameter.Found`. This change better reflects the actual warning being suppressed.

Also, a new annotation for `WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase` has been added around the method for finding iframe nodes in

includes/apple-exporter/components/class-component.php

@@ -270,7 +270,7 @@ public function __construct(
 	 * @access public
 	 * @return \DOMElement|null The node on success, or null on no match.
 	 */
-	public static function node_matches( $node ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
+	public static function node_matches( $node ) { // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter.Found
 		return null;
 	}
 
@@ -777,6 +777,7 @@ protected static function url_from_src( $html ) {
 		return '';
 	}
 
+	/* phpcs:disable WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase */
 	/**
 	 * Given a DOMElement, recursively traverses its children looking for iframe
 	 * nodes and returns the first one it finds.
@@ -840,4 +841,5 @@ public static function is_embed_figure( $node ) {
 
 		return $has_figure_iframe;
 	}
+	/* phpcs:enable WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase */
 }