Solve problem with language change not updating block

Author: alan412

src/blocks/mrc_class_method_def.ts

@@ -93,6 +93,7 @@ const CLASS_METHOD_DEF = {
         this.mrcParameters = [];
         this.setPreviousStatement(false);
         this.setNextStatement(false);
+        this.updateBlock_();
     },
     /**
        * Returns the state of this block as a JSON serializable object.