change tx signing for clanker and fix optional metadata

[phdargen]

Description

Improving clanker action with smart wallet support

• fix metadata formatting for optional args
• bump clanker sdk
• fixes issue in retrieving tx logs in CdpSmartWalletProvider, where occasionally transactionReceipt is not ready even though userOp was awaited
• [] use clanker sdk only to build tx, not to sign/submit it such that it should work with smart accounts
  -> new implementation works for server wallet, but not for smart accounts where the tx reverts (see below)

Tests

Chatbot: typescript/examples/langchain-cdp-wallet-chatbot/chatbot.ts
Network: Base mainnet

Prompt:  clank token with name Test,  symbol T and image ipfs://bafybeifpcq3hlckg76vamug6ogf3u7sgosf6pco6d6yeewuxercm4kmksi, vault  20%, lock duration 7 days, vesting 0 days, description testing

-------------------
Clanker token deployed at address 0x2767eeb10f68c7683d0bd1be18e189693268aa8e! View the transaction at 0x0d769d062e8c8af345c43e8ddd3ff09dfb333f41e0910ec3cd8a87ce232a5a72. View the token page at https://clanker.world/clanker/0x2767eeb10f68c7683d0bd1be18e189693268aa8e
-------------------
The Clanker token has been successfully deployed with the following details:

- **Token Name:** Test
- **Symbol:** T
- **Address:** [0x2767eeb10f68c7683d0bd1be18e189693268aa8e](https://clanker.world/clanker/0x2767eeb10f68c7683d0bd1be18e189693268aa8e)
- **Transaction:** [View Transaction](https://etherscan.io/tx/0x0d769d062e8c8af345c43e8ddd3ff09dfb333f41e0910ec3cd8a87ce232a5a72)

Chatbot: typescript/examples/langchain-smart-wallet-chatbot/chatbot.ts
Network: Base mainnet

Prompt:  clank token with name Test,  symbol T and image ipfs://bafybeifpcq3hlckg76vamug6ogf3u7sgosf6pco6d6yeewuxercm4kmksi, vault  20%, lock duration 7 days, vesting 0 days, description testing

-------------------
tokenConfig {
  tokenAdmin: '0xDb48aB111ea896649547c01aaaE9166DebCe11ae',
  name: 'Test',
  symbol: 'T',
  salt: '0x0000000000000000000000000000000000000000000000000000000000000000',
  image: 'ipfs://bafybeifpcq3hlckg76vamug6ogf3u7sgosf6pco6d6yeewuxercm4kmksi',
  metadata: '{"description":"testing","socialMediaUrls":[]}',
  context: '{"interface":"CDP AgentKit"}',
  originatingChainId: 8453n
}
estimateContractGas: 4440980n
estimateGas: 4440980n
receipt {
  smartAccountAddress: '0xDb48aB111ea896649547c01aaaE9166DebCe11ae',
  status: 'failed',
  userOpHash: '0xdfd52b1820820a3c40c797861c5febd4e046a41ddff772190527000881033546'
}
The transaction reverted: failed

Checklist

A couple of things to include in your PR for completeness:

• Added documentation to all relevant README.md files
• Added a changelog entry

[cb-heimdall]

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