test: added basic clipboard tests for wysiwyg

Author: d3m1d0v

demo/components/Playground.tsx

@@ -307,6 +307,7 @@ export const Playground = memo<PlaygroundProps>((props) => {
                 <MarkdownEditorView
                     autofocus
                     className={className}
+                    qa="playground-md-editor"
                     stickyToolbar={Boolean(stickyToolbar)}
                     toolbarsPreset={toolbarsPreset}
                     wysiwygToolbarConfig={wysiwygToolbarConfig}