fix(AngleUpIcon): Replace AngleUpIcon with RhMicronsCaretUpIcon

[rebeccaalpert]

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

Additional issues:

Summary by CodeRabbit

• Bug Fixes
  • Updated the previous-navigation arrow in the search input to use a different caret icon for a more consistent appearance.

[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: 238cf277-0d2e-4448-93f8-d72be0a6a0d5

📥 Commits

Reviewing files that changed from the base of the PR and between 2729a13 and fbedebc.

⛔ Files ignored due to path filters (1)

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

📒 Files selected for processing (1)

• packages/react-core/src/components/SearchInput/SearchInput.tsx

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Walkthrough

This change replaces the previous-navigation up-caret icon in SearchInput.tsx, swapping the import and usage from AngleUpIcon to RhMicronsCaretUpIcon. No other logic, props, or exported contracts are modified.

Changes

SearchInput Icon Update

Layer / File(s)	Summary
Swap previous-navigation caret icon packages/react-core/src/components/SearchInput/SearchInput.tsx	Replaces the AngleUpIcon import and its usage on the previous-navigation button with RhMicronsCaretUpIcon.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• patternfly/patternfly-react#12494: Modifies the same SearchInput.tsx file, swapping the "next" down-caret icon in the same component.

Suggested reviewers

• nicolethoen
• kmcfaul
• andrew-ronaldson
• thatblindgeye
• dlabaj

🚥 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 summarizes the main change: replacing AngleUpIcon with RhMicronsCaretUpIcon.
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-12497.surge.sh

A11y report: https://pf-react-pr-12497-a11y.surge.sh