fix(ui): correctly format lubimyczytac external rating link

[sebhewelt]

🚀 Pull Request

📝 Description

Appends the required '/ksiazka' suffix to the Lubimyczytac URL and ensures the href is an empty string if the ID is missing to prevent malformed links.

Fixes #2265

🛠️ Changes Implemented

• update link in metadata-searcher.component.ts
• update link logic in metadata-viewer.component.html

🧪 Testing Strategy

📸 Visual Changes (if applicable)

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💬 Additional Context (optional)

[acx10]

@sebhewelt Thanks for the PR! I’m a bit short on time to test this myself. If possible, could you please share a quick video or screenshot showing the updated link behavior? Appreciate it!

[sebhewelt]

Hey @acx10 👋🏻 thank you for all your efforts here, loving the project!

Here's a quick demo showing the fix of the lubimyczytac.pl URLs in 2 places:

lubimyczytac-demo-fix.mov

[acx10]

@sebhewelt Looks great!