[website] Hide 'become a diamond sponsor' box on landing page (#28814)
[website] Hide 'become a diamond sponsor' box on landing page (#28814)


rscnt/material-ui,mui-org/material-ui,oliviertassinari/material-ui,rscnt/material-ui,rscnt/material-ui,mui-org/material-ui,mui-org/material-ui,oliviertassinari/material-ui,oliviertassinari/material-ui