feat: Additional way to reset in spacing

[kof]

Description

closes #4844

As a user when I don't know about option+click shorthand, and try to reset spacing, only other way is to wait for the tooltip to come. If you click, like you do on other labels - input will come but no way to reset.

Solution: show a label next to the input.

Steps for reproduction

1. click on any spacing value
2. see label next to input
3. test usual label functionality

Code Review

• hi @kof, I need you to do
  • conceptual review (architecture, feature-correctness)
  • detailed review (read every line)
  • test it on preview

Before requesting a review

• made a self-review
• added inline comments where things may be not obvious (the "why", not "what")

Before merging

• tested locally and on preview environment (preview dev login: 0000)
• updated test cases document
• added tests
• if any new env variables are added, added them to .env file

[TrySound]

Nice one!