Modify ShareButtons for updated Twitter URL (JhaSourav07#2411)

Updated Twitter sharing URL to use 'x.com' and added conditional text
parameter.

## Description

Fixes JhaSourav07#2407 

## Pillar

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

## Visual Preview

## Checklist before requesting a review:

- [ ] I have read the `CONTRIBUTING.md` file.
- [ ] I have tested these changes locally
(`localhost:3000/api/streak?user=YOUR_USERNAME`).
- [ ] I have run `npm run format` and `npm run lint` locally and
resolved all errors (CI will fail otherwise).
- [ ] 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.
- [ ] I have started the repo.
- [ ] I have made sure that i have only one commit to merge in this PR.
- [ ] The SVG output matches the CommitPulse "premium quality" aesthetic
standard (no raw elements, smooth animations, correct fonts).
- [ ] (Recommended) I joined the CommitPulse Discord community for
contributor discussions, mentorship, and faster PR support.

Author: JhaSourav07

components/ShareButtons.tsx

@@ -6,8 +6,12 @@ interface ShareButtonsProps {
 }
 
 export default function ShareButtons({ url, title = '' }: ShareButtonsProps) {
-  const linkedinUrl = `https://www.linkedin.com/sharing/share-offsite/?url=${encodeURIComponent(url)}`;
-  const twitterUrl = `https://twitter.com/intent/tweet?url=${encodeURIComponent(url)}&text=${encodeURIComponent(title)}`;
+  const linkedinUrl = `https://www.linkedin.com/sharing/share-offsite/?url=${encodeURIComponent(
+    url
+  )}`;
+  const twitterUrl =
+    `https://x.com/intent/tweet?url=${encodeURIComponent(url)}` +
+    (title ? `&text=${encodeURIComponent(title)}` : '');
 
   return (
     <div className="flex gap-3">