fix: fix line number scrolling (001-fix-line-number-scrolling)

[remarkablemark]

What is the motivation for this pull request?

fix: fix line number scrolling (001-fix-line-number-scrolling)

What is the current behavior?

Line number gutter is out of sync when the following happens:

1. text overflows horizontally
2. horizontal scrollbar appears

What is the new behavior?

1. horizontal scrollbar appears
2. padding bottom to line number bottom when horizontal scrollbar appears
3. increased textarea min-height

Checklist:

• Conventional Commits
• Tests
• Documentation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (9d371a0) to head (3a73481).
⚠️ Report is 27 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master       #28   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           10        12    +2     
  Lines          155       194   +39     
  Branches        46        62   +16     
=========================================
+ Hits           155       194   +39     

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