Make 'fetchSystemPluginWithPath' calls more robust to API changes

[staskus]

Describe the bug

Some parts of the app rely on 'fetchSystemPluginWithPath' calls which could break if API starts returning a different path. Example:

• pdfdoF-3pF-p2
• peaMlT-PG-p2#comment-2059

We call this method with a hardcoded path we define in the code. We should either improve fetchSystemPluginWith to be more flexible or rely on a different identifier than path.

        guard ServiceLocator.featureFlagService.isFeatureFlagEnabled(.wooPaymentsDepositsOverviewInPaymentsMenu),
              let depositService = dependencies.wooPaymentsDepositService,
              await dependencies.systemStatusService.fetchSystemPluginWithPath(siteID: siteID,
                                                                               pluginPath: WooConstants.wooPaymentsPluginPath) != nil else {
            shouldShowDepositSummary = false
            return
        }

    func checkIfGiftCardsPluginIsActive() async -> Bool {
        guard featureFlagService.isFeatureFlagEnabled(.giftCardInOrderForm) else {
            return false
        }
        return await withCheckedContinuation { continuation in
            stores.dispatch(SystemStatusAction.fetchSystemPluginWithPath(siteID: siteID, pluginPath: SystemPluginPaths.giftCards) { plugin in
                continuation.resume(returning: plugin?.active == true)
            })
        }
    }

To Reproduce Steps to reproduce the behavior:

1. Install WooCommerce 9.2.0
2. Enable Gift Card plugin woocommerce-gift-cards/woocommerce-gift-cards
3. Launch the app
4. Make an order
5. Add a breakpoint on checkIfGiftCardsPluginIsActive
6. Notice that the plugin is not found since the path is different

Screenshots If applicable, add screenshots to help explain your problem.

Expected behavior A clear and concise description of what you expected to happen.

Isolating the problem (mark completed items with an [x]):

• [x] I have deactivated other plugins and confirmed this bug occurs when only WooCommerce plugin is active.
• [x] This bug happens with a default WordPress theme active, or Storefront.
• [x] I can reproduce this bug consistently using the steps above.

Mobile Environment Please include:

• Device:
• iOS version:
• WooCommerce iOS version: 9.2.1

WordPress Environment

``` Copy and paste the system status report from **WooCommerce > System Status** in WordPress admin. ```

[dangermattic]

🚫 Please add a type label (e.g. type: enhancement) and a feature label (e.g. feature: stats) to this issue.