fix image server references for tests (2 tests failing: missing function & looking for registration prompt for unregistered user)

test-playwright/35-record-gift-from-image-share.spec.ts

@@ -50,6 +50,14 @@ import path from 'path';
 import { test, expect } from '@playwright/test';
 import { importUser } from './testUtils';
 
+/**
+ * Note: by default, this test uses the test image API server.
+ *
+ * If you want to use your own image API server, you can set the
+ * VITE_DEFAULT_IMAGE_API_SERVER environment variable to your server's URL
+ * in the playwright.config-local.ts file.
+ * 
+ */
 test('Record item given from image-share', async ({ page }) => {
 
   let randomString = Math.random().toString(36).substring(2, 8);