Additional formatting improvements for fread

[badasahog]

Followup for #7074, looks like I missed some. Cheers!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.69%. Comparing base (131af20) to head (fdfeeea).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7106      +/-   ##
==========================================
- Coverage   98.69%   98.69%   -0.01%     
==========================================
  Files          79       79              
  Lines       14689    14688       -1     
==========================================
- Hits        14498    14497       -1     
  Misses        191      191              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[github-actions]

No obvious timing issues in HEAD=additionalFreadFormatting

Generated via commit fdfeeea

Download link for the artifact containing the test results: ↓ atime-results.zip

Task	Duration
R setup and installing dependencies	5 minutes and 4 seconds
Installing different package versions	9 minutes and 30 seconds
Running and plotting the test cases	2 minutes and 32 seconds