test(utils): check boundary robustness of escapeXML helper (JhaSourav07#1558) (JhaSourav07#2151)

## Description

Fixes JhaSourav07#1558 

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- [ ] 🎨 Pillar 1 — New Theme Design
- [ ] 📐 Pillar 2 — Geometric SVG Improvement
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Author: JhaSourav07

lib/svg/generator.test.ts

@@ -1236,6 +1236,10 @@ describe('escapeXML', () => {
   it('escapes script injection characters <script>&" together', () => {
     expect(escapeXML('<script>&"')).toBe('&lt;script&gt;&amp;&quot;');
   });
+
+  it('should handle boundary input with only special XML characters', () => {
+    expect(escapeXML('<>&"\'')).toBe('&lt;&gt;&amp;&quot;&#39;');
+  });
 });
 
 describe('particleCount', () => {