Fix image flickering on star field

[dbelokon]

Issue This PR Addresses

Fixes #3193.

Type of Change

• Bugfix: Change which fixes an issue
• New Feature: Change which adds functionality
• Documentation Update: Change which improves documentation
• UI: Change which improves UI

Description

This PR fixes the image flickering on the star field.

Steps to test the PR

You can run in the deployment, but if you want to run on your PC:

1. Get my changes.
2. If you don't have them, I suggest you copy the staging configuration (cp config/env.staging .env)
3. Run pnpm dev
4. Go to localhost:8000
5. Go to the About page

No more flickering!

Checklist

• Quality: This PR builds and passes our npm test and works locally
• Tests: This PR includes thorough tests or an explanation of why it does not
• Screenshots: This PR includes screenshots or GIFs of the changes made or an explanation of why it does not (if applicable)
• Documentation: This PR includes updated/added documentation to user exposed functionality or configuration variables are added/changed or an explanation of why it does not(if applicable)

[gitpod-io]

[sirinoks]

No flickering, works for me

[JerryHue]

I can't believe it was a two-line fix... And here I was thinking that we had to rewrite the whole math simulation. Neato solution!