[Bug] Focus Management and Form Submission Not Working in Desktop Login/Signup Forms

[navaneeth0041]

🐛 Describe the bug

The desktop view of login and signup forms has non-functional keyboard navigation and form submission. Users must manually click each input field as completing one field and pressing Enter does not move focus to the next field. Additionally, pressing Enter after filling all fields does not trigger form submission.

Sample code to reproduce the problem:

CustomTextField(
  controller: nameController,
  isDesktop: true,
  text: 'Name',
  validateFunction: (value) {
    if (value!.isEmpty) {
      return 'Name cannot be empty';
    }
    return null;
  },
  autoValid: AutovalidateMode.onUserInteraction,
)

The error message you got, with the full traceback:
No error messages are produced as this is a functionality issue. The current behavior requires manual mouse interaction for:

1. Moving between input fields (no keyboard navigation)
2. Form submission (Enter key not triggering submit)

Expected behavior:

• Pressing Enter should move focus to the next input field in sequence:
  Name → Username → Status → Email → Password
• Pressing Enter in the password field should trigger form submission if all validations pass
• Focus nodes should be properly connected to enable keyboard navigation

2025-02-11.20-11-56.mp4