fix(capacitor-ios): use binary-framework-compatible Capacitor API calls

getBool single-arg optional variant and getArray generic variant are not
exposed by the precompiled xcframework. Use two-arg getBool and cast-based
getArray instead.

Author: j3k0

capacitor/ios/Sources/PurchasePlugin/PurchasePlugin.swift

@@ -62,7 +62,7 @@ public class PurchasePlugin: CAPPlugin, CAPBridgedPlugin {
     // MARK: - Plugin Methods
 
     @objc func `init`(_ call: CAPPluginCall) {
-        debugEnabled = call.getBool("debug") ?? false
+        debugEnabled = call.getBool("debug", false)
         debugLog("init")
 
         // Process any pending transactions
@@ -77,7 +77,7 @@ public class PurchasePlugin: CAPPlugin, CAPBridgedPlugin {
     }
 
     @objc func load(_ call: CAPPluginCall) {
-        guard let productIds = call.getArray("productIds", String.self) else {
+        guard let productIds = call.getArray("productIds") as? [String] else {
             call.reject("productIds is required")
             return
         }