fix(tree-view): update expand icon direction

[mcoker]

fixes #12553

Summary by CodeRabbit

• Bug Fixes
  • Updated the Tree View toggle indicator to display the correct right-facing caret icon.
  • Improved visual consistency for expandable Tree View items.
• Style
  • Refined the interface styling to align with the latest PatternFly visual updates.

[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: 32245775-c9a2-45a5-b990-4fbfbf6d0727

📥 Commits

Reviewing files that changed from the base of the PR and between f8bcd7c and a4125f0.

⛔ Files ignored due to path filters (2)

• packages/react-core/src/components/TreeView/__tests__/__snapshots__/TreeViewListItem.test.tsx.snap is excluded by !**/*.snap
• yarn.lock is excluded by !**/yarn.lock, !**/*.lock

📒 Files selected for processing (6)

• packages/react-core/package.json
• packages/react-core/src/components/TreeView/TreeViewListItem.tsx
• packages/react-docs/package.json
• packages/react-icons/package.json
• packages/react-styles/package.json
• packages/react-tokens/package.json

---

Walkthrough

Updates PatternFly package references to 6.6.0-prerelease.18 and changes the TreeView toggle caret from RhMicronsCaretDownIcon to RhMicronsCaretRightIcon.

Changes

TreeView and PatternFly updates

Layer / File(s)	Summary
PatternFly prerelease dependency alignment packages/react-core/package.json, packages/react-docs/package.json, packages/react-icons/package.json, packages/react-styles/package.json, packages/react-tokens/package.json	Updates @patternfly/patternfly references to 6.6.0-prerelease.18.
TreeView toggle caret update packages/react-core/src/components/TreeView/TreeViewListItem.tsx	Replaces the toggle caret import and rendered icon with RhMicronsCaretRightIcon.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related PRs

• patternfly/patternfly-react#12298: Updates caret icons in the same TreeView component.
• patternfly/patternfly-react#12526: Updates the same PatternFly package manifests to an earlier 6.6.0 prerelease.
• patternfly/patternfly-react#12427: Updates @patternfly/patternfly versions in overlapping package manifests.

Suggested reviewers: thatblindgeye, kmcfaul, nicolethoen

🚥 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 is concise and accurately describes the TreeView expand icon direction fix.
Linked Issues check	✅ Passed	The TreeView icon swap to a right-caret matches the linked issue’s requested direction update.
Out of Scope Changes check	✅ Passed	The PatternFly dependency bumps appear tied to the icon update and no unrelated feature work is shown.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

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[patternfly-build]

Preview: https://pf-react-pr-12554.surge.sh

A11y report: https://pf-react-pr-12554-a11y.surge.sh