Change default flags to discover things on Arb Sepolia (#270)

Resolves tahowallet/dapp#170

Change flags to support new features

⚠️ This is already working on live version on Arb Sepolia

Latest build:
[extension-builds-270](https://github.com/tahowallet/tally-extension-token/suites/17350510366/artifacts/991469355)
(as of Wed, 18 Oct 2023 07:39:33 GMT).

.env.defaults

@@ -30,9 +30,9 @@ SUPPORT_ARBITRUM_NOVA=false
 SUPPORT_SWAP_QUOTE_REFRESH=false
 SUPPORT_ACHIEVEMENTS_BANNER=false
 SUPPORT_NFT_SEND=false
-SUPPORT_THE_ISLAND=false
+SUPPORT_THE_ISLAND=true
 SUPPORT_THE_ISLAND_ON_TENDERLY=false
 USE_MAINNET_FORK=false
 ARBITRUM_FORK_RPC=https://rpc.tenderly.co/fork/2fc2cf12-5c58-439f-9b5e-967bfd02191a
-TESTNET_TAHO_DEPLOYER_ADDRESS=0x0ACB7821EC6f2Ca5D8a2Dd5518db2C852A1E2A10
-TESTNET_TAHO_ADDRESS=0xE808174921a73df31756ca0996C1a9E5D9667876
+TESTNET_TAHO_DEPLOYER_ADDRESS=0x55B180c3470dA8E31761d45468e4E61DbE13Eb9B
+TESTNET_TAHO_ADDRESS=0x78f04eC76df38Fcb37971Efa8EcbcB33f52dae0F