chore(ui): Fix remaining lint issues for PF6 migration

[dvail]

Description

Fixes remaining errors detected by npm run lint that are not handled in other recently merged PRs.

1. Replace instances of --pf-v5- with --pf-v6- equivalent
2. Remove a few overrides to PatternFly styling that moved us further away from the defaults (and not for the purpose of coexisting with Tailwind)
3. Replace <DescriptionListCompact> with <DescriptionList isCompact> and fix an issue with PF6 termWidth prop

User-facing documentation

• CHANGELOG.md is updated OR update is not needed
• documentation PR is created and is linked above OR is not needed

Testing and quality

• the change is production ready: the change is GA, or otherwise the functionality is gated by a feature flag
• CI results are inspected

Automated testing

• added unit tests
• added e2e tests
• added regression tests
• added compatibility tests
• modified existing tests

How I validated my change

Manual testing.

Before termWidth:

After with horizontalTermWidthModifier (and banner color fixes):

[dvail]

This change is part of the following stack:

• ROX-28622: Update UI to PatternFly 6 #17809
  • chore(ui): Fix remaining lint issues for PF6 migration #19212 ◀

_{Change managed by git-spice.}

[openshift-ci]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.52%. Comparing base (de1e05a) to head (5e07be4).
⚠️ Report is 3 commits behind head on dv/ROX-28622-pf-6.

Additional details and impacted files

@@                  Coverage Diff                  @@
##           dv/ROX-28622-pf-6   #19212      +/-   ##
=====================================================
- Coverage              49.52%   49.52%   -0.01%     
=====================================================
  Files                   2666     2666              
  Lines                 201181   201181              
=====================================================
- Hits                   99632    99629       -3     
- Misses                 94113    94116       +3     
  Partials                7436     7436              

Flag	Coverage Δ
go-unit-tests	49.52% <ø> (-0.01%)	⬇️

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[pedrottimark]

Thank you for tenacity and attention to detail.