fix(TrashIcon): Replace TrashIcon with RhUiTrashFillIcon

[rebeccaalpert]

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

Additional issues:

Summary by CodeRabbit

• Style
  • Updated icon components across documentation examples and demo components for visual consistency.

[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: c7269219-6304-4971-9b08-fff429d9f7de

📥 Commits

Reviewing files that changed from the base of the PR and between a479b4c and da9458f.

📒 Files selected for processing (6)

• packages/react-core/src/components/Form/examples/Form.md
• packages/react-core/src/components/Form/examples/FormFieldGroups.tsx
• packages/react-core/src/demos/CardView/CardView.md
• packages/react-core/src/demos/CardView/examples/CardView.tsx
• packages/react-core/src/demos/PrimaryDetail.md
• packages/react-core/src/demos/examples/PrimaryDetail/PrimaryDetailCardView.tsx

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Walkthrough

Replaces TrashIcon with RhUiTrashFillIcon (from rh-ui-trash-fill-icon) across six files: the Form field groups example, CardView demo, and PrimaryDetail demo. Changes are limited to icon import statements and render sites; no logic, state, or props are altered.

Changes

Trash Icon Replacement

Layer / File(s)	Summary
Form field group icon swap packages/react-core/src/components/Form/examples/Form.md, packages/react-core/src/components/Form/examples/FormFieldGroups.tsx	Swaps the TrashIcon import for RhUiTrashFillIcon and updates all three "Remove" button render sites in the nested field groups.
CardView and PrimaryDetail demo icon swap packages/react-core/src/demos/CardView/CardView.md, packages/react-core/src/demos/CardView/examples/CardView.tsx, packages/react-core/src/demos/PrimaryDetail.md, packages/react-core/src/demos/examples/PrimaryDetail/PrimaryDetailCardView.tsx	Replaces TrashIcon import and delete dropdown render with RhUiTrashFillIcon in both the CardView and PrimaryDetailCardView demos, and updates corresponding .md import references.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested labels

Needs design review

Suggested reviewers

• nicolethoen
• thatblindgeye

🚥 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 accurately and specifically describes the main change: replacing TrashIcon with RhUiTrashFillIcon across multiple files.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[patternfly-build]

Preview: https://pf-react-pr-12510.surge.sh

A11y report: https://pf-react-pr-12510-a11y.surge.sh