Incorrect Default Flag Display in Phone Input Component

[dvdcpp]

Current Behavior:
When using the stylesheet 'react-phone-input-2/lib/style.css', the component displays the first flag from the image set as the default when no country is selected. This is incorrect and can be misleading.

Expected Behavior:
The component should display a neutral or generic icon when no country is selected.

Proposed Solution:

1. Implement a generic icon (e.g., a globe) as the default display.
2. Allow the option to select a custom default icon from a local image.