fix: fix issue that parses created date incorrectly coming from android

Author: remonh87

example/android/app/build.gradle

@@ -26,7 +26,7 @@ if (flutterVersionName == null) {
 
 android {
     namespace 'com.flutter.stripe.example'
-    compileSdk 35
+    compileSdk 36
 
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_17

packages/stripe_platform_interface/lib/src/method_channel_stripe.dart

@@ -586,14 +586,20 @@ class MethodChannelStripe extends StripePlatform {
   @override
   Future<FinancialConnectionTokenResult> collectBankAccountToken({
     required String clientSecret,
-    CollectBankAccountTokenParams? params,
+    required CollectBankAccountTokenParams params,
   }) async {
     final result = await _methodChannel.invokeMapMethod<String, dynamic>(
       'collectBankAccountToken',
-      {'clientSecret': clientSecret, 'params': params?.toJson()},
+      {'clientSecret': clientSecret, 'params': params.toJson()},
     );
 
-    _financialConnectionsEventHandler = params?.onEvent;
+    // workaround for fact that created is parsed as string from Stripe android
+    final created = result?['token']['created'];
+    if (created != null && created is String) {
+      result?['token']['created'] = int.tryParse(created);
+    }
+
+    _financialConnectionsEventHandler = params.onEvent;
 
     if (result!.containsKey('error')) {
       throw ResultParser<void>(parseJson: (json) => {}).parseError(result);

packages/stripe_platform_interface/lib/src/models/payment_sheet.dart

@@ -451,7 +451,6 @@ abstract class PaymentSheetPrimaryButtonThemeColors
     /// The text color of the primary button when in a success state. Supports both single color strings and light/dark color objects.
     @JsonKey(toJson: ColorKey.toJson, fromJson: ColorKey.fromJson)
     Color? successTextColor,
-
   }) = _PaymentSheetPrimaryButtonThemeColors;
 
   factory PaymentSheetPrimaryButtonThemeColors.fromJson(

packages/stripe_platform_interface/lib/src/stripe_platform_interface.dart

@@ -170,7 +170,7 @@ abstract class StripePlatform extends PlatformInterface {
   /// Methods related to financial connections
   Future<FinancialConnectionTokenResult> collectBankAccountToken({
     required String clientSecret,
-    CollectBankAccountTokenParams? params,
+    required CollectBankAccountTokenParams params,
   });
 
   Future<FinancialConnectionSessionResult> collectFinancialConnectionsAccounts({