Remove unused tempfile finalizer ivar sets

[HassanAkbar]

Metanorma PR checklist

• Breaking changes (list related PRs)
• Documentation update required (create task for this)
• External dependency introduced (documentation update need)
• Gem with native library introduced

[Copilot]

Pull request overview

This PR removes a no-op Tempfile “finalizer suppression” workaround from the ZipExtractor specs (keeping the actual Windows-safe close+delete behavior) and updates the associated TODO note documenting the cleanup.

Changes:

• Removed instance_variable_set(:@finalizer, ...) and Tempfile.remove_instance_variable usage from zip_extractor_spec.rb.
• Updated the TODO entry describing the now-removed ivar hacks and current verification steps.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
TODO/04-reduce-spec-ivar-use.md	Updates the project TODO note describing the “instance_variable_*” cleanup and verification guidance.
spec/uniword/infrastructure/zip_extractor_spec.rb	Removes ineffective Tempfile “finalizer suppression” code while preserving the close+delete workaround for Windows file locking.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (1)

TODO/04-reduce-spec-ivar-use.md:41

• This note hard-codes the "installed version" as tempfile-0.3.1, but the repo doesn’t pin tempfile (no lockfile) and CI/Ruby version changes will make that statement stale. The key point is the ivar name (@finalizer_manager), so it’d be clearer and more future-proof to avoid asserting a specific installed version.

**`Tempfile` has no `@finalizer` ivar.** The installed version
(`tempfile-0.3.1`) uses `@finalizer_manager`:

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.