[SWA-141][FEAT] - Change default Gnosis Chain output token to $WETH

[ElRodrigote]

Fixes: SWA-141

Description

• Update the pre-selected output currency for Gnosis, to be WETH

Visual Evidence

How to test the changes

1) Pull this branch 2) Run the project locally 3) Go to Swapr dapp page 4) Connect your wallet 5) For Gnosis Chain, you should see pre-selected $XDAI (native token) as the input token and $WETH as the output token in the Swapbox

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