chore: revert formatUtils of ordinal rank test (#29493)

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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Test-only change that doesn’t affect runtime behavior; low risk aside
from potential expectations mismatch with intended formatting.
> 
> **Overview**
> Adds a new `formatOrdinalRank` test suite in `formatUtils.test.ts` to
validate English ordinal suffix formatting, including teen exceptions
(11–13), larger ranks, and handling of negative/decimal inputs (absolute
value + flooring).
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
e165efb. Bugbot is set up for automated
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Author: tommasini

app/components/UI/Rewards/utils/formatUtils.test.ts

@@ -27,6 +27,7 @@ import {
   formatSignedUsd,
   formatCompactUsd,
   sanitizeOndoTokenName,
+  formatOrdinalRank,
 } from './formatUtils';
 import { IconName } from '@metamask/design-system-react-native';
 import { getTimeDifferenceFromNow } from '../../../../util/date';
@@ -1368,6 +1369,60 @@ describe('formatUtils', () => {
     });
   });
 
+  describe('formatOrdinalRank', () => {
+    it('formats 1 as 1st', () => {
+      expect(formatOrdinalRank(1)).toBe('1st');
+    });
+
+    it('formats 2 as 2nd', () => {
+      expect(formatOrdinalRank(2)).toBe('2nd');
+    });
+
+    it('formats 3 as 3rd', () => {
+      expect(formatOrdinalRank(3)).toBe('3rd');
+    });
+
+    it('formats 4 as 4th', () => {
+      expect(formatOrdinalRank(4)).toBe('4th');
+    });
+
+    it('formats 11 as 11th', () => {
+      expect(formatOrdinalRank(11)).toBe('11th');
+    });
+
+    it('formats 12 as 12th', () => {
+      expect(formatOrdinalRank(12)).toBe('12th');
+    });
+
+    it('formats 13 as 13th', () => {
+      expect(formatOrdinalRank(13)).toBe('13th');
+    });
+
+    it('formats 21 as 21st', () => {
+      expect(formatOrdinalRank(21)).toBe('21st');
+    });
+
+    it('formats 22 as 22nd', () => {
+      expect(formatOrdinalRank(22)).toBe('22nd');
+    });
+
+    it('formats 23 as 23rd', () => {
+      expect(formatOrdinalRank(23)).toBe('23rd');
+    });
+
+    it('formats 111 as 111th', () => {
+      expect(formatOrdinalRank(111)).toBe('111th');
+    });
+
+    it('uses absolute value for negative ranks', () => {
+      expect(formatOrdinalRank(-5)).toBe('5th');
+    });
+
+    it('floors non-integer ranks', () => {
+      expect(formatOrdinalRank(3.7)).toBe('3rd');
+    });
+  });
+
   describe('isPercentChangeNonNegative', () => {
     it('returns true for positive number', () => {
       expect(isPercentChangeNonNegative(0.15)).toBe(true);