chore: use isHTMLFormElement function

Signed-off-by: Logan McAnsh <[email protected]>

Author: mcansh

packages/form-data/src/form-data.js

@@ -15,7 +15,7 @@ export class FormData {
 
     Object.defineProperty(this, "_entries", { enumerable: false });
 
-    if (form !== undefined) {
+    if (isHTMLFormElement(form)) {
       for (const element of form.elements) {
         if (isSelectElement(element)) {
           for (const option of element.options) {

packages/form-data/test/form-data.spec.js

@@ -261,7 +261,6 @@ export const test = (test) => {
   });
 
   test("Should allow passing a form element",  () => {
-
     class FakeForm {
       get [Symbol.toStringTag]() {
         return "HTMLFormElement";