fix(QuestionIcon): Replace QuestionIcon with RhUiQuestionMarkIcon

[rebeccaalpert]

What:
Part of #12402. Breaking into separate PRs so it is easier to review.

Additional issues:

Summary by CodeRabbit

• Documentation
  • Updated HelperText component examples to showcase an alternative icon option (switching to a question mark icon).

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: ba850afa-3a6c-42b6-912b-89062b898498

📥 Commits

Reviewing files that changed from the base of the PR and between 70b11bb and 3871553.

📒 Files selected for processing (2)

• packages/react-core/src/components/HelperText/examples/HelperText.md
• packages/react-core/src/components/HelperText/examples/HelperTextWithCustomIcon.tsx

🚧 Files skipped from review as they are similar to previous changes (1)

• packages/react-core/src/components/HelperText/examples/HelperTextWithCustomIcon.tsx

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Walkthrough

HelperText example code and documentation now use RhUiQuestionMarkIcon instead of QuestionIcon for the indeterminate helper text icon.

Changes

HelperText icon replacement

Layer / File(s)	Summary
Icon import and usage update in HelperText example packages/react-core/src/components/HelperText/examples/HelperTextWithCustomIcon.tsx, packages/react-core/src/components/HelperText/examples/HelperText.md	Replaces QuestionIcon with RhUiQuestionMarkIcon in the example import, the HelperTextItem icon prop, and the matching markdown snippet.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• patternfly/patternfly-react#12456: Updates an example component and docs by swapping one icon import/usage for an RhUi equivalent.
• patternfly/patternfly-react#12459: Performs the same targeted icon replacement pattern in React Core examples.
• patternfly/patternfly-react#12470: Updates example documentation/components to replace an existing icon with a corresponding RhUi icon.

Suggested reviewers: thatblindgeye, kmcfaul

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: replacing QuestionIcon with RhUiQuestionMarkIcon.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[patternfly-build]

Preview: https://pf-react-pr-12509.surge.sh

A11y report: https://pf-react-pr-12509-a11y.surge.sh

[thatblindgeye]

Codewise looks good, however this particular RH icon to me is rather difficult to see due to how thin it is.