FIO-9034 fixed creating extra submit button

src/WebformBuilder.js

@@ -1051,8 +1051,12 @@ export default class WebformBuilder extends Component {
     }
     this.keyboardActionsEnabled = keyboardActionsEnabled;
 
+    const isSubmitButton = (comp) => {
+      return (comp.type === 'button') && ((comp.action === 'submit') || !comp.action);
+    }
+
     const isShowSubmitButton = !this.options.noDefaultSubmitButton
-      && (!form.components.length || !form.components.find(comp => comp.key === 'submit'));
+      && (!form.components.length || !form.components.find(comp => isSubmitButton(comp)));
 
     // Ensure there is at least a submit button.
     if (isShowSubmitButton) {

src/WebformBuilder.unit.js

@@ -9,6 +9,7 @@ import sameApiKeysLayoutComps from '../test/forms/sameApiKeysLayoutComps';
 import testApiKeysUniquifying from '../test/forms/testApiKeysUniquifying';
 import formBasedOnWizard from '../test/forms/formBasedOnWizard';
 import formWithFormController from '../test/forms/formWithFormController';
+import simpleWebform from '../forms/simpleWebform';
 
 global.requestAnimationFrame = (cb) => cb();
 global.cancelAnimationFrame = () => {};
@@ -233,6 +234,17 @@ describe('WebformBuilder tests', function() {
     }).catch(done);
   });
 
+  it('Should not add extra submit button if submit button API key was changed', (done) => {
+    const builder = Harness.getBuilder();
+    builder.setForm(simpleWebform).then(() => {
+      const components = builder.webform.components;
+      const submit = components[1];
+      assert.equal(components.length, 2);
+      assert.equal(components[1].key, 'testSubmit');
+      done();
+    }).catch(done);
+  });
+
   it('Should keep min/max date validation settings with moment.js function', (done) => {
     const builder = Harness.getBuilder();
     builder.setForm(columnsForm).then(() => {

test/forms/simpleWebform.js

@@ -0,0 +1,23 @@
+export default {
+  components: [
+    {
+      label: 'Text Field',
+      applyMaskOn: 'change',
+      tableView: true,
+      validateWhenHidden: false,
+      key: 'textField',
+      type: 'textfield',
+      input: true
+    },
+    {
+      type: 'button',
+      label: 'Submit',
+      key: 'testSubmit',
+      disableOnInvalid: true,
+      input: true,
+      tableView: false
+    }
+  ],
+  display: 'form',
+  type: 'form',
+};