Enable border on sortableTable by default

[luixxiul]

Fixes #10434
Follow-up to #10265

Auditors: @cezaraugusto

Test Plan:

1. Run npm run add-simulated-synopsis-visits 100
2. Open about:preferences#payments
3. Pin some sites
4. Make sure the orange border appears on the table

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.

Test Plan:

Reviewer Checklist:

Tests

• Adequate test coverage exists to prevent regressions
• Tests should be independent and work correctly when run individually or as a suite ref
• New files have MPL2 license header

[codecov-io]

Codecov Report

Merging #10435 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #10435   +/-   ##
=======================================
  Coverage   53.81%   53.81%           
=======================================
  Files         238      238           
  Lines       21051    21051           
  Branches     3258     3258           
=======================================
  Hits        11329    11329           
  Misses       9722     9722

Flag	Coverage Δ
#unittest	53.81% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
app/renderer/components/common/sortableTable.js	58.65% <ø> (ø)	⬆️