feat: OpenClaw: Remove api key on uninstall (via apify-factory)

[apify-factory]

Closes #39

Generated by the apify-factory bot

Coder-Verifier Results

• Cycles completed: 1/2
• Final status: PASSED

Validation Summary

Goal	Status
uninstall_command_registered	✅
removes_plugin_entry_including_api_key	✅
removes_plugin_allow_entry	✅
cleans_tools_alsoallow_safely	✅
preserves_unrelated_config	✅
keeps_group_plugins_when_other_plugins_present	✅
uses_config_mutation_api_guarded	✅
uses_api_id_not_hardcoded	✅
removal_is_idempotent_and_defensive	✅
has_unit_tests_for_removal	✅
typecheck_passes	✅
tests_pass	✅
readme_documents_uninstall	✅

[protoss70]

@apify-factory ideally we shouldnt introduce our own new command but listen to the uninstall hook somehow and work with the openclaw plugins uninstall command. Please do some research regarding this and try not to introduce a new command