Update TestRestoreSystemCollection_ValidNames to use the correct
title case format for system collection names.
The API handler validates these specific collection names:
- "Continue Reading"
- "Recently Added"
- "Recently Read"
- "Not Started"
The test was previously using kebab-case names (e.g., "continue-reading")
which were being rejected by the validation logic with 400 Bad Request.
This aligns the test with the updated collection name format used
throughout the application.
john-okeefe
eda79a1f92