Fix Product Query block hijacking all Query blocks queries

src/BlockTypes/ProductQuery.php

@@ -37,13 +37,27 @@ protected function initialize() {
 	 * @param array       $parsed_block The block being rendered.
 	 */
 	public function update_query( $pre_render, $parsed_block ) {
-		if ( 'core/query' !== $parsed_block['blockName'] ) {
+		if ( 'core/query' !== $parsed_block['blockName'] || ! isset( $parsed_block['attrs']['__woocommerceVariationProps'] ) ) {
 			return;
 		}
 
 		add_filter(
 			'gutenberg_build_query_vars_from_query_block',
 			function( $query ) use ( $parsed_block ) {
+				// We need to make sure the filter doesn't run multiple times. However,
+				// this is the only place we can register the filter, and we cannot unregister
+				// it because we need to use an anonymous callback as we need to pass the
+				// `$parsed_block` to this closure.
+				// A brief discussion of the reasoning was had in the following PR:
+				// https://github.com/woocommerce/woocommerce-blocks/pull/6952 .
+				static $has_ran = false;
+
+				if ( $has_ran ) {
+					return $query;
+				}
+
+				$has_ran = true;
+
 				return $this->get_query_by_attributes( $query, $parsed_block );
 			},
 			10,