Part 1 of WOOMOB-913

Just one review is required.

Description

This PR is part 1 of updating plugin matching to use the file name in plugin path instead of matching by plugin name. This change addresses edge cases where plugin paths can be altered by certain hosts or other plugins.

This PR removes a subset of plugin matching by name use cases across the app and replaces them with a more robust plugin matching approach using the PluginsService.loadPluginInStorage method with a plugin enum. The changes include:

Key changes:

• Removed storage method loadSystemPlugin(siteID:name:) and related use cases in order details
• Added Plugin enum to centralize plugin matching logic and keep implementation details internal within Yosemite
• Enhanced PluginsService with loadPluginInStorage method that accepts a plugin enum for synchronous plugin loading
• Updated ProductListViewModel to remove plugin matching by name use case, with test cases for the changes
• Refactored OrderDetailsViewModel to use the new plugin enum approach instead of name-based matching
• Removed SystemStatusAction.fetchSystemPluginListWithNameList usage across the codebase
• Updated POS system status service to use the new plugin loading approach in PluginsService

Implementation details

The implementation moves away from fragile name-based plugin matching towards a more durable approach that will support filename-based matching in subsequent PRs. The Plugin enum provides a centralized way to identify plugins while keeping the matching implementation details internal to the service layer.

Steps to reproduce

Since this is a refactoring change that maintains existing functionality:

1. Navigate to order details for orders --> order details UI should work as before
2. In the Products tab, the scan button in the left of the navigation bar should only be shown if Woo Square plugin is not installed and active
3. Access POS functionality for eligible stores

Testing information

I tested:

• Products tab scan button from ProductListViewModel changes for sites with and without Woo Square plugin
• Orders with shipping labels from the legacy shipping plugin
• Orders with subscription products from Woo Subscriptions plugin
• Orders shipment tracking work as before

• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.