Set default ruler width

[thecoolwinter]

Description

Adds a minimum ruler width equal to 4 digits wide to reduce layout shift while scrolling.

Related Issues

• N/A, discussed a couple times in discord.

Checklist

• [x] I read and understood the contributing guide as well as the code of conduct
• [x] The issues this PR addresses are related to each other
• [x] My changes generate no new warnings
• [x] My code builds and runs on my machine
• [x] My changes are all related to the related issue above
• [x] I documented my code

Screenshots

Previous:

Now: