Update remaining TimesIcon to RhMicronsCloseIcon

[thatblindgeye]

Describe the enhancement or change
Followup to, from compass/unified meeting 4/6/26, we should make the remaining updates. Claude caught the following:

1. packages/react-core/src/components/HelperText/examples/HelperTextWithCustomIcon.tsx
   - Line 7: Import statement
   - Line 30: Usage in component
2. packages/code-connect/components/DualListSelector/DualListHeader.figma.tsx
   - Line 3: Import statement
   - Line 12: Usage as placeholder icon

Documentation/Markdown files with TimesIcon in imports:

These are markdown files with embedded code examples that also need updating:

3. packages/react-core/src/demos/HelperText.md - Line 12
4. packages/react-core/src/components/HelperText/examples/HelperText.md - Line 12
5. packages/react-core/src/demos/CustomMenus/CustomMenus.md - Line 23
6. packages/react-core/src/demos/Toolbar.md - Line 14
7. packages/react-icons/README.md - Lines 8, 10, 50 (documentation examples)

Is this request originating from a Red Hat product team? If so, which ones and is there any sort of deadline for this enhancement?

Any other information?

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Jira Issue: PF-3911

[coderabbitai]

🔗 Related PRs

#12200 - chore(miscellaneous): update flags from js to ts [merged]
#12222 - feat(react-icons): add newest rh brand icons [merged]
#12245 - feat(icons): add swap support for mapped rh-ui icons [merged]
#12265 - fix(icons): update internal import specifier [merged]
#12291 - feat(misc): update status icons to rh icons [merged]

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