test(Icons-mouse-interactivity): verify Interactive Tooltips, Cursor Hovers & Touch Event Propagation (Variation 5) (JhaSourav07#3112)

## Description

This PR adds test coverage to verify interactive Tooltips, Cursor
Hovers, and Touch Event Propagation for the `Icons` components. It
validates that the SVGs properly allow DOM mouse events (like `onClick`)
to propagate up to their interactive parent wrapper elements without
interference, ensuring a smooth user experience.

Fixes JhaSourav07#2817

## Pillar

- [ ] 🎨 Pillar 1 — New Theme Design
- [ ] 📐 Pillar 2 — Geometric SVG Improvement
- [ ] 🕐 Pillar 3 — Timezone Logic Optimization
- [x] 🛠️ Other (Bug fix, refactoring, docs)

## Visual Preview
N/A (Test addition only, no visual changes).

## Checklist before requesting a review:

- [x] I have read the `CONTRIBUTING.md` file.
- [x] I have tested these changes locally
(`localhost:3000/api/streak?user=YOUR_USERNAME`).
- [x] I have run `npm run format` and `npm run lint` locally and
resolved all errors (CI will fail otherwise).
- [x] My commits follow the Conventional Commits format (e.g.,
`feat(themes): ...`, `fix(calculate): ...`).
- [ ] I have updated `README.md` if I added a new theme or URL
parameter.
- [x] I have started the repo.
- [x] I have made sure that i have only one commit to merge in this PR.
- [x] The SVG output matches the CommitPulse "premium quality" aesthetic
standard (no raw elements, smooth animations, correct fonts).
- [x] (Recommended) I joined the CommitPulse Discord community for
contributor discussions, mentorship, and faster PR support.

Author: JhaSourav07

app/components/Icons.mouse-interactivity.test.tsx

@@ -0,0 +1,79 @@
+import { fireEvent, render } from '@testing-library/react';
+import { describe, expect, it, vi } from 'vitest';
+
+import { BoxIcon, CheckIcon, CloseIcon, CopyIcon, ZapIcon } from './Icons';
+
+describe('Icons mouse interactivity & event propagation', () => {
+  it('allows mouse event propagation when CopyIcon is clicked', () => {
+    const handleClick = vi.fn();
+    const { container } = render(
+      <button onClick={handleClick}>
+        <CopyIcon />
+      </button>
+    );
+
+    const svg = container.querySelector('svg');
+    if (svg) {
+      fireEvent.click(svg);
+    }
+
+    // Verifies that clicks on the SVG propagate up to interactive parent elements
+    expect(handleClick).toHaveBeenCalledTimes(1);
+  });
+
+  it('allows mouse event propagation when ZapIcon is clicked', () => {
+    const handleClick = vi.fn();
+    const { container } = render(
+      <button onClick={handleClick}>
+        <ZapIcon />
+      </button>
+    );
+
+    const svg = container.querySelector('svg');
+    if (svg) fireEvent.click(svg);
+
+    expect(handleClick).toHaveBeenCalledTimes(1);
+  });
+
+  it('allows mouse event propagation when BoxIcon is clicked', () => {
+    const handleClick = vi.fn();
+    const { container } = render(
+      <div onClick={handleClick}>
+        <BoxIcon />
+      </div>
+    );
+
+    const svg = container.querySelector('svg');
+    if (svg) fireEvent.click(svg);
+
+    expect(handleClick).toHaveBeenCalledTimes(1);
+  });
+
+  it('allows mouse event propagation when CheckIcon is clicked', () => {
+    const handleClick = vi.fn();
+    const { container } = render(
+      <button onClick={handleClick}>
+        <CheckIcon />
+      </button>
+    );
+
+    const svg = container.querySelector('svg');
+    if (svg) fireEvent.click(svg);
+
+    expect(handleClick).toHaveBeenCalledTimes(1);
+  });
+
+  it('allows mouse event propagation when CloseIcon is clicked', () => {
+    const handleClick = vi.fn();
+    const { container } = render(
+      <button onClick={handleClick}>
+        <CloseIcon />
+      </button>
+    );
+
+    const svg = container.querySelector('svg');
+    if (svg) fireEvent.click(svg);
+
+    expect(handleClick).toHaveBeenCalledTimes(1);
+  });
+});