Enable the regexp/no-super-linear-move ESLint rule

[calixteman]

It flags the regexes whose search is quadratic in the input length, like the autolinker and XFA-path ones fixed recently.

The three existing offenders: \s* matched the CSS indentation but also the line terminators that make ^ match with the m flag (the preprocessed CSS is unchanged), (\d+) made every digit of a number a candidate start position, and /T.*$/ could fail on the $ and backtrack since . doesn't match a line terminator.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.04%. Comparing base (e57a464) to head (fc01f7d).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #21708   +/-   ##
=======================================
  Coverage   90.04%   90.04%           
=======================================
  Files         264      264           
  Lines       66894    66894           
=======================================
+ Hits        60232    60233    +1     
+ Misses       6662     6661    -1     

Flag	Coverage Δ
browsertest	66.52% <ø> (+0.01%)	⬆️
fonttest	9.03% <ø> (ø)
integrationtest	69.35% <ø> (-0.01%)	⬇️
unittest	57.89% <ø> (+0.01%)	⬆️
unittestcli	56.60% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 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.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[timvandermeij]

Good idea; thank you!