fix: duplicate webhook calls on document complete (#1721)

Fix webhooks being sent twice due to duplicate frontend calls

Updated the assistant confirmation dialog so the next signer is always
visible (if dictate is enabled). Because if the form is invalid (due to
no name) there is no visual queue that the form is invalid (since it's
hidden)

## Notes

Didn't bother to remove the weird assistants form since it currently
works for now


![image](https://github.com/user-attachments/assets/47910fec-e05e-486a-a61d-16078d948893)

## Tests

- Currently running locally
- Tested webhooks via network tab and via webhook.site

packages/app-tests/e2e/document-auth/next-recipient-dictation.spec.ts

@@ -341,9 +341,6 @@ test('[NEXT_RECIPIENT_DICTATION]: should allow assistant to dictate next signer'
   await expect(page.getByRole('dialog')).toBeVisible();
   await expect(page.getByText('The next recipient to sign this document will be')).toBeVisible();
 
-  // Update next recipient
-  await page.locator('button').filter({ hasText: 'Update Recipient' }).click();
-
   // Use dialog context to ensure we're targeting the correct form fields
   const dialog = page.getByRole('dialog');
   await dialog.getByLabel('Name').fill('New Signer');

packages/app-tests/e2e/teams/team-signature-settings.spec.ts

@@ -148,6 +148,10 @@ test('[TEAMS]: check signature modes work for templates', async ({ page }) => {
 
     await page.getByRole('button', { name: 'Update' }).first().click();
 
+    // Wait for finish
+    await page.getByText('Document preferences updated').waitFor({ state: 'visible' });
+    await page.getByTestId('toast-close').click();
+
     const template = await seedTeamTemplateWithMeta(team);
 
     await page.goto(`/t/${team.url}/templates/${template.id}`);