chore: update openiap-gql to 1.0.11 with type improvements

[hyochan]

Summary

Updates openiap-gql dependency from 1.0.9 to 1.0.11, bringing improved type definitions with public initializers and new fields for alternative billing support.

• Type System Improvements: Regenerated Types.swift with 19 new public initializers for Input types, eliminating cross-module initialization issues
• Alternative Billing Support: Added AlternativeBillingModeAndroid enum and InitConnectionConfig struct
• Enhanced Transaction Handling: Improved ObjC bridge to use actual transaction data from pending transactions
• Field Naming Updates: Renamed externalPurchaseUrlOnIOS → externalPurchaseUrl for consistency

Changes

Dependencies

• Updated openiap-gql from 1.0.9 to 1.0.11 in openiap-versions.json

Code Generation

• Fixed generate-types.sh script to properly copy generated files
• Regenerated Sources/Models/Types.swift with latest schema

New Types & Fields

• AlternativeBillingModeAndroid enum (iOS alternative billing mode support)
• InitConnectionConfig struct (connection configuration)
• ActiveSubscription: Added currentPlanId, basePlanIdAndroid, purchaseTokenAndroid fields

API Changes

• externalPurchaseUrlOnIOS → externalPurchaseUrl (breaking change)
• All Input types now have public initializers (improved DX for cross-module usage)

Implementation Improvements

• OpenIapModule+ObjC.swift: Enhanced finishTransactionWithPurchaseId to fetch actual transaction data from pending transactions before falling back to minimal data
• OpenIapSerialization.swift: Added helper methods for creating Input types:
  • requestSubscriptionIosProps()
  • requestPurchaseIosProps()
  • requestSubscriptionPropsByPlatforms()
  • requestPurchasePropsByPlatforms()
• Example/AlternativeBillingScreen.swift: Simplified to use direct initialization with new public initializers

Breaking Changes

⚠️ Field Rename: externalPurchaseUrlOnIOS → externalPurchaseUrl

Update any code using this field:

// Before
let url = props.externalPurchaseUrlOnIOS

// After  
let url = props.externalPurchaseUrl

Test Plan

• swift test - All 10 tests passing
• swift build - Package builds successfully
• Example app builds and runs without errors
• Alternative billing flow works correctly
• Transaction finishing uses actual transaction data when available