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Relates to: FuelLabs/fuel-connectors#451
This tasks adds a few features to handle gasless transactions in the Fuel Wallet.
![image](https://private-user-images.githubusercontent.com/21992060/397929353-ed8577bf-b5c1-46ae-b425-bddf2a97c02f.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.Wqd3tVwks76qiCEvPLTkTamXmlo98kG9Nf73jkzEzxw)
We can set skipCustomFee = true, and this will consider that the fees were paid by a paymaster, hiding the custom fees UI elements and skipping the simulateTransaction logic.
This also runs the onBeforeSend tx modifications hook.
Video of a gasless transaction:
https://github.com/user-attachments/assets/269e6cc4-d90b-416b-9489-ff02ae988b53