fix: fetch versus calendar outside org branch — versus param silently ignored when org is set (JhaSourav07#2213)

Fixes JhaSourav07#2192 

## Description
In `app/api/streak/route.ts`, the `versus` calendar was only fetched
inside the `else` branch (single user mode). When the `org` param was
also set, the `versus` fetch was skipped entirely — `versusCalendar`
remained `undefined`, the `else if (versus && versusCalendar)` condition
was never true, and the response silently fell through to a normal
single-user SVG with no error.

Fixed by moving the `versus` fetch outside the `if (org) / else` block
so it runs independently for both user and org modes.

## Pillar
- [x] 🛠️ Other (Bug fix, refactoring, docs)

## Visual Preview
N/A — API fix, no UI change.

## 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.
- [x] My commits follow the Conventional Commits format.
- [ ] I have updated `README.md` if I added a new theme or URL
parameter.
- [x] I have starred 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.
- [ ] (Recommended) I joined the CommitPulse Discord community.

Author: JhaSourav07

app/api/streak/route.ts

@@ -189,15 +189,16 @@ export async function GET(request: Request) {
         to,
       });
       calendar = userData.calendar;
+    }
 
-      if (versus) {
-        const versusData = await fetchGitHubContributions(versus, {
-          bypassCache: refresh,
-          from,
-          to,
-        });
-        versusCalendar = versusData.calendar;
-      }
+    // Fetch versus calendar independently — works with both user and org modes
+    if (versus) {
+      const versusData = await fetchGitHubContributions(versus, {
+        bypassCache: refresh,
+        from,
+        to,
+      });
+      versusCalendar = versusData.calendar;
     }
 
     // ─── JSON output mode ──────────────────────────────────────────────────