When sharing, default page to the viewer's current page

[allanlasser]

Fixes #950

[netlify]

✅ Deploy Preview for documentcloud-frontend-next ready!

Name	Link
🔨 Latest commit	020c48b
🔍 Latest deploy log	https://app.netlify.com/sites/documentcloud-frontend-next/deploys/6751ca7383b4ca000851a05c
😎 Deploy Preview	https://deploy-preview-951.muckcloud.com
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 25 (🔴 down 34 from production) Accessibility: 86 (🟢 up 1 from production) Best Practices: 83 (🔴 down 9 from production) SEO: 82 (no change from production) PWA: - View the detailed breakdown and full score reports

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	31.03%	6820 / 21976
🔵	Statements	31.03%	6820 / 21976
🔵	Functions	49.19%	276 / 561
🔵	Branches	75.47%	1037 / 1374

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/lib/components/sidebar/ViewerActions.svelte	0%	0%	0%	0%	1-172

Generated in workflow #461 for commit 020c48b by the Vitest Coverage Report Action