Fix some bugs with file locking

[claucambra]

No description provided.

[Copilot]

Pull Request Overview

This PR addresses bugs around file locking and synchronization by modifying how file metadata is handled and ensuring that only fully uploaded files are subject to deletion. The changes include updating tests to flag items as uploaded, refining lock file update and creation logic, and narrowing the FilesDatabaseManager query to only consider uploaded files.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Tests/NextcloudFileProviderKitTests/FilesDatabaseManagerTests.swift	Updated tests now set the uploaded flag on metadata where appropriate.
Sources/NextcloudFileProviderKit/Item/Item.swift	Adjusted the implementation of local URL retrieval for file contents.
Sources/NextcloudFileProviderKit/Item/Item+ModifyLockFile.swift	Revised lock file modification to return an error when running on macOS 13.0.
Sources/NextcloudFileProviderKit/Item/Item+ModifyUnuploaded.swift	Simplified local file retrieval for unuploaded items using localUrlForContents.
Sources/NextcloudFileProviderKit/Item/Item+Modify.swift, Item+Fetch.swift, Item+DeleteLockFile.swift, Item+CreateLockFile.swift	Improvements in the handling of lock file creation, deletion, and fetching.
Sources/NextcloudFileProviderKit/Database/FilesDatabaseManager.swift	Changed query to only select uploaded items when processing deletions.

[codecov]

Codecov Report

Attention: Patch coverage is 65.84158% with 69 lines in your changes missing coverage. Please review.

Project coverage is 81.61%. Comparing base (815c3ea) to head (bbf1bf2).
Report is 13 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/NextcloudFileProviderKit/Item/Item.swift	0.00%	46 Missing ⚠️
...ces/NextcloudFileProviderKit/Item/Item+Fetch.swift	21.05%	15 Missing ⚠️
...udFileProviderKit/Item/Item+ModifyUnuploaded.swift	0.00%	4 Missing ⚠️
...extcloudFileProviderKitTests/ItemCreateTests.swift	60.00%	2 Missing ⚠️
...extcloudFileProviderKitTests/ItemModifyTests.swift	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #66      +/-   ##
==========================================
- Coverage   81.67%   81.61%   -0.06%     
==========================================
  Files          61       61              
  Lines       12696    12835     +139     
==========================================
+ Hits        10369    10475     +106     
- Misses       2327     2360      +33     

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