diay

Unhandled Promise Rejection

1

**Sentry Issue:** [KAP-BG0](https://sentry.io/organizations/wulkano-l0/issues/2939306878/) **macOS version:** Big Sur (11) **Kap version:** 3.5.1 ``` Unhandled Promise Rejection Error: sha512 checksum mismatch, expected TtHyDo2gPq3VyToaIWgPPFVv/vLjKE6XfCYcTQ3I9lTPL9SyQSZI/v8WYx9yNqw6RELmC/C8r1rU5P9E3PBGTw==, got YC/Vt0GIR3M/J/JRiUu76ZbgGpmJfABmd+1knWuTlxQRhqBRwN50hrV9nN4yRvKq5cHey3ppN80eDoAmEw/RPA== at Object.newError (/Applications/Kap.app/Contents/Resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/index.js:47:19) at DigestTransform.validate (/Applications/Kap.app/Contents/Resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:323:27) at...

Noticed sepolia weth missing from weth9. Causing order routing not to work for sepolia when using @uniswap/smart-order-router

Add support for refund option on sendPrivateTransaction

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## What As per [flashbots docs](https://docs.flashbots.net/flashbots-auction/advanced/rpc-endpoint#eth_sendprivatetransaction), `sendPrivateTransaction` allows users to specify refund recipients. This exposes a refund parameter on the `MevShareClient.sendTransaction` and populates the json rpc request accordingly ### Other...