[DASH-644] Add Saakuru mainnet and Saakuru testnet in GAS_FREE_CHAINS…

… list (#5776)

## Problem solved

Short description of the bug fixed or feature added

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## PR-Codex overview
This PR focuses on updating the `MismatchButton` component in the `MismatchButton.tsx` file to include new network identifiers for the `Saakuru Mainnet` and `Saakuru Testnet`.

### Detailed summary
- Added `7225878` for `Saakuru Mainnet`.
- Added `247253` for `Saakuru Testnet`.

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}`

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apps/dashboard/src/components/buttons/MismatchButton.tsx

@@ -59,6 +59,8 @@ const GAS_FREE_CHAINS = [
   4457845, // zero testnet
   978658, // treasure topaz
   300, // zksync sepolia
+  7225878, // Saakuru Mainnet
+  247253, // Saakuru Testnet
 ];
 
 function useNetworkMismatchAdapter(desiredChainId: number) {
@@ -127,6 +129,7 @@ export const MismatchButton = forwardRef<
       </Button>
     );
   }
+
   const notEnoughBalance =
     (evmBalance.data?.value || 0n) === 0n && !GAS_FREE_CHAINS.includes(chainId);