Cross-Platform SigMint Improvements + Pk Override Fixes, PlayMode Tests, Better Return Types, Storage Fix

[0xFirekeeper]

PR-Codex overview

The focus of this PR is to update data types to BigInteger for better precision and handle WebGL build limitations.

Detailed summary

• Updated data types to BigInteger for better precision
• Handled WebGL build limitations for file writing
• Improved error handling for data parsing
• Refactored SDK initialization for consistency

The following files were skipped due to too many changes: Assets/Tests/TransactionReadTests.cs, Assets/Thirdweb/Core/Scripts/Utils.cs, Assets/Thirdweb/Core/Scripts/ThirdwebManager.cs, Assets/Tests/EventsTests.cs, Assets/Thirdweb/Core/Scripts/ERC20.cs, Assets/Tests/PackReadTests.cs, Assets/Thirdweb/Core/Scripts/Pack.cs, Assets/Tests/ERC20ReadTests.cs, Assets/Tests/ERC20WriteTests.cs, Assets/Tests/ERC1155WriteTests.cs, Assets/Tests/SmartWalletTests.cs, Assets/Tests/ERC721ReadTests.cs, Assets/Tests/ERC721WriteTests.cs, Assets/Tests/ERC1155ReadTests.cs, .github/workflows/main.yml, Assets/Thirdweb/Core/Scripts/ERC721.cs, Assets/Tests/StorageTests.cs, Assets/Tests/ThirdwebManagerTests.cs, Assets/Tests/WalletTests.cs, Assets/Tests/MarketplaceReadTests.cs, Assets/Thirdweb/Core/Scripts/ERC1155.cs, Assets/Tests/CustomReadTests.cs

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Test Results

  1 files   12 suites   5m 44s ⏱️
 96 tests  96 ✅ 0 💤 0 ❌
100 runs  100 ✅ 0 💤 0 ❌

Results for commit 4efdc85.

♻️ This comment has been updated with latest results.