fix style pasting (#832)

* fix style pasting

* Update src/actions/actionStyles.ts

src/element/typeChecks.ts

@@ -5,3 +5,14 @@ export function isTextElement(
 ): element is ExcalidrawTextElement {
   return element.type === "text";
 }
+
+export function isExcalidrawElement(element: any): boolean {
+  return (
+    element?.type === "text" ||
+    element?.type === "diamond" ||
+    element?.type === "rectangle" ||
+    element?.type === "ellipse" ||
+    element?.type === "arrow" ||
+    element?.type === "line"
+  );
+}