Create a React class component that displays a personalized greeting message. The component should allow a user to input their name, which will update the greeting after a short delay. Include a screenshot of the output.

Requirements

$1-$ Initial Greeting Load

When the component first loads, display a default greeting message, such as $$Hello$,$ Guest! Welcome to our site.$$

$2-$ User Input

Add an input field where the user can enter their name. Store the input in the component$$s state.

$3-$ Update Greeting Button

When clicked, show a loading message, like $$Loading greeting...$.$

After $2$ seconds, display an updated greeting with the entered name. If no name is entered, use "Guest" as the default.