Fix: Filter trashed documents in folder listings

[cv]

Summary

• Fixes #357 - Trashed documents were showing up in folder listings but not in search results
• Added trashed = false filter to ensure consistency between search and list functionality
• Prevents trashed documents from appearing on the site until permanently deleted

Changes

• server/list.js: Added AND trashed = false to the query string in getOptions() function for folder drive type
• test/unit/list.test.js: Added comprehensive tests to verify trashed documents are filtered for both team and folder drive types

Test Plan

• [x] Added unit tests for both team and folder drive types
• [x] All existing tests pass (115/119 - 4 pre-existing failures unrelated to this change)
• [x] Linter passes with no issues
• [x] Verified search functionality remains unchanged

🤖 Generated with Claude Code