Upcast element to attribute defaults to 'low' priority instead of 'normal'

src/conversion/conversion.js

@@ -410,7 +410,7 @@ export default class Conversion {
 				upcastElementToAttribute( {
 					view,
 					model,
-					priority: definition.priority
+					converterPriority: definition.priority
 				} )
 			);
 		}

src/conversion/upcast-converters.js

@@ -151,7 +151,7 @@ export function upcastElementToAttribute( config ) {
 	const eventName = elementName ? 'element:' + elementName : 'element';
 
 	return dispatcher => {
-		dispatcher.on( eventName, converter, { priority: config.converterPriority || 'normal' } );
+		dispatcher.on( eventName, converter, { priority: config.converterPriority || 'low' } );
 	};
 }