❇️ feature/RZA-250083: Design 404 page

[xkeshav]

Is your feature request related to a problem? Please describe.
404 page redesign as per theme

Describe the solution you'd like

redesign a 404 page design ,page is laready there as 404.astro using native css only and

Describe alternatives you've considered

Additional context
Add any other context or screenshots about the feature request here.

[1046prt]

• Here are the screenshots of 404 page in both light/dark mode
• I have modified 404 page and already discuss the updated regarding 404 page in DSM

[1046prt]

• PR Merged Add 404 Page #101