Fix flickering on slide changes.

[marguin-vercel]

When switching from one slide to the next, the viewer sees a flicker/flash of the screen clearing before the next slide is rendered. Here is a patch file that fixes this issue, created by Devin.ai that should address this issue.

fix-slide-transition-flickering.patch

[BurnedChris]

Thanks, @marguin-vercel ! I will take a look at this! 👀