docs(orphans): fix incorrect comments on LuaReaper and RubyReaper

[mhenrixon]

Summary

• LuaReaper incorrectly had the same comment as RubyReaper: "this is a much slower version of the lua script but does not crash redis"
• Fixed LuaReaper comment to: "this is faster than the ruby reaper but may block redis while executing"
• Fixed RubyReaper comment to: "this is slower than the lua reaper but does not block redis"

Closes #870

Test plan

• Orphan specs: 105 examples, 0 failures

Summary by CodeRabbit

• Documentation
  • Updated performance and Redis-behavior documentation to clarify trade-offs between available orphan-cleanup approaches.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 4147cb4c-3a09-4c4b-923d-77bbba8b522a

📥 Commits

Reviewing files that changed from the base of the PR and between 51aaadc and 020cb58.

📒 Files selected for processing (2)

• lib/sidekiq_unique_jobs/orphans/lua_reaper.rb
• lib/sidekiq_unique_jobs/orphans/ruby_reaper.rb

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📝 Walkthrough

Walkthrough

Documentation updates to the LuaReaper and RubyReaper classes correcting performance characteristic descriptions. The Lua reaper comment was previously copy-pasted from the Ruby version, incorrectly claiming slower performance than itself.

Changes

Cohort / File(s)	Summary
Reaper Documentation Updates lib/sidekiq_unique_jobs/orphans/lua_reaper.rb, lib/sidekiq_unique_jobs/orphans/ruby_reaper.rb	Corrected class-level documentation to accurately describe relative performance: Lua reaper is faster but may block Redis; Ruby reaper is slower but doesn't block Redis.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A comment copy-paste, oh what a mistake!
The Lua reaper thought it was slow as a rake,
But truth has prevailed with a fix clean and bright,
Now Redis knows fast and slow done just right! 🚀

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