fix(PlusIcon): Replace PlusIcon with RhUiAddIcon

[rebeccaalpert]

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

Additional issues:

Summary by CodeRabbit

• Style
  • Updated icons across Card, MenuToggle, NumberInput, Slider, Tabs, and Tile components to display new designs from the Red Hat UI design system. The "Add" and "Plus" action buttons throughout the application now feature the updated icon visuals. All component functionality, behavior, and user interactions remain completely unchanged.

[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: e7abe1ee-8eee-41b2-871e-cd7880b974ad

📥 Commits

Reviewing files that changed from the base of the PR and between a479b4c and ec81521.

⛔ Files ignored due to path filters (2)

• packages/react-core/src/components/NumberInput/__tests__/__snapshots__/NumberInput.test.tsx.snap is excluded by !**/*.snap
• packages/react-core/src/deprecated/components/Tile/__tests__/__snapshots__/Tile.test.tsx.snap is excluded by !**/*.snap

📒 Files selected for processing (12)

• packages/react-core/src/components/Card/examples/Card.md
• packages/react-core/src/components/Card/examples/CardTile.tsx
• packages/react-core/src/components/Card/examples/CardTileMulti.tsx
• packages/react-core/src/components/MenuToggle/examples/MenuToggle.md
• packages/react-core/src/components/MenuToggle/examples/MenuToggleCustomIcon.tsx
• packages/react-core/src/components/NumberInput/NumberInput.tsx
• packages/react-core/src/components/Slider/examples/Slider.md
• packages/react-core/src/components/Slider/examples/SliderActions.tsx
• packages/react-core/src/components/Tabs/Tabs.tsx
• packages/react-core/src/deprecated/components/Tile/__tests__/Tile.test.tsx
• packages/react-core/src/deprecated/components/Tile/examples/Tile.md
• packages/react-core/src/deprecated/components/Tile/examples/TileWithIcon.tsx

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Walkthrough

PlusIcon is replaced with RhUiAddIcon across component source files (NumberInput, Tabs), example components (CardTile, CardTileMulti, MenuToggleCustomIcon, SliderActions, TileWithIcon), markdown documentation files, and snapshot tests for the deprecated Tile component.

Changes

PlusIcon → RhUiAddIcon replacement

Layer / File(s)	Summary
Component implementation icon swap packages/react-core/src/components/NumberInput/NumberInput.tsx, packages/react-core/src/components/Tabs/Tabs.tsx	NumberInput and Tabs update their icon imports and replace PlusIcon with RhUiAddIcon in the plus/add button render output.
Examples and docs icon swap packages/react-core/src/components/Card/examples/Card.md, packages/react-core/src/components/Card/examples/CardTile.tsx, packages/react-core/src/components/Card/examples/CardTileMulti.tsx, packages/react-core/src/components/MenuToggle/examples/MenuToggle.md, packages/react-core/src/components/MenuToggle/examples/MenuToggleCustomIcon.tsx, packages/react-core/src/components/Slider/examples/Slider.md, packages/react-core/src/components/Slider/examples/SliderActions.tsx, packages/react-core/src/deprecated/components/Tile/examples/Tile.md, packages/react-core/src/deprecated/components/Tile/examples/TileWithIcon.tsx	All example components and their paired markdown docs replace PlusIcon imports and JSX usages with RhUiAddIcon across Card tile variants, MenuToggle custom-icon variants, Slider action buttons, and Tile variants.
Tile snapshot test icon swap packages/react-core/src/deprecated/components/Tile/__tests__/Tile.test.tsx	Tile snapshot tests replace PlusIcon with RhUiAddIcon for the icon, stacked-icon, and stacked-large-icon test cases.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

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 'fix(PlusIcon): Replace PlusIcon with RhUiAddIcon' directly and accurately summarizes the main change across all files in the changeset.
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-12520.surge.sh

A11y report: https://pf-react-pr-12520-a11y.surge.sh