Capture POSAggregateModel in card connection Tasks weakly to release if connection hasn't finished

connectReader calls may not finish, for example, when onboarding is shown. If POS is closed, POSAggregateModel is not released.

To solve this issue, capturing self weakly so POSAggregateModel would be released even if the Task hasn't finished

Author: staskus

WooCommerce/Classes/POS/Models/PointOfSaleAggregateModel.swift

@@ -167,14 +167,14 @@ extension PointOfSaleAggregateModel {
     }
 
     func connectCardReader() {
-        Task { @MainActor in
-            _ = try await cardPresentPaymentService.connectReader(using: .bluetooth)
+        Task { @MainActor [weak self] in
+            _ = try await self?.cardPresentPaymentService.connectReader(using: .bluetooth)
         }
     }
 
     func disconnectCardReader() {
-        Task { @MainActor in
-            await cardPresentPaymentService.disconnectReader()
+        Task { @MainActor [weak self] in
+            await self?.cardPresentPaymentService.disconnectReader()
         }
     }