change block interval on b4

Author: MakMuftic

testnet/shared-config-test.json

@@ -585,7 +585,6 @@
       "chainId": 19934,
       "caipId": "eip155:19934",
       "name": "b4-sepolia",
-      "blockInterval": 10,
       "type": "evm",
       "bridge": "0x9D5C332Ebe0DaE36e07a4eD552Ad4d8c5067A61F",
       "nativeTokenAdapter": "0x90e3B6Ec4587790c709cb17E5dbAff5F9E682Be5",
@@ -607,6 +606,7 @@
       "nativeTokenFullName": "eth",
       "nativeTokenDecimals": 18,
       "blockConfirmations": 1,
+      "blockInterval": 1,
       "startBlock": 750,
       "feeRouter": "0xde937016D67811f08D93ee54093ea686C21d211C",
       "feeHandlers": [