Cherry-pick #5715 – Reset app badge count when visiting orders tab

The PR was originally merged on the `release/8.1` branch, but we need it
in `release/8.1.1` in order to ship it as part of an hotfix build.

Author: pmusolino

RELEASE-NOTES.txt

@@ -13,6 +13,7 @@
 - [***] Now it's possible to filter Order List by multiple statuses and date ranges. Plus, we removed the top tab bar on Orders Tab. [https://github.com/woocommerce/woocommerce-ios/pull/5491]
 - [*] Login: Password AutoFill will suggest wordpress.com accounts. [https://github.com/woocommerce/woocommerce-ios/pull/5399]
 - [*] Store picker: after logging in with store address, the pre-selected store is now the currently selected store instead of the store from login flow. [https://github.com/woocommerce/woocommerce-ios/pull/5508]
+- [*] The application icon number from order push notifications is now cleared after visiting the orders tab. [https://github.com/woocommerce/woocommerce-ios/pull/5715]
 - [internal] Migrated Settings screen to MVVM [https://github.com/woocommerce/woocommerce-ios/pull/5393]
 
 

WooCommerce/Classes/ViewRelated/Orders/OrdersRootViewController.swift

@@ -92,8 +92,12 @@ final class OrdersRootViewController: UIViewController {
     }
 
     override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+
         // Needed in ViewWillAppear because this View Controller is never recreated.
         fetchExperimentalTogglesAndConfigureNavigationButtons()
+
+        ServiceLocator.pushNotesManager.resetBadgeCount(type: .storeOrder)
     }
 
     override var shouldShowOfflineBanner: Bool {