op-challenger: Use common.Hash type in Asterisc VMState (#10967)

* Use common.Hash type in asterisc VMState

* Update asterisc test state

op-challenger/game/fault/trace/asterisc/state.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/ethereum-optimism/optimism/cannon/mipsevm"
 	"github.com/ethereum-optimism/optimism/op-service/ioutil"
+	"github.com/ethereum/go-ethereum/common"
 )
 
 var asteriscWitnessLen = 362
@@ -18,7 +19,7 @@ type VMState struct {
 	Exited    bool        `json:"exited"`
 	Step      uint64      `json:"step"`
 	Witness   []byte      `json:"witness"`
-	StateHash [32]byte `json:"stateHash"`
+	StateHash common.Hash `json:"stateHash"`
 }
 
 func (state *VMState) validateStateHash() error {

op-challenger/game/fault/trace/asterisc/test_data/state.json

@@ -3,38 +3,5 @@
   "exited": false,
   "step": 0,
   "witness": "wOSi8Cm62dDmKt1OGwxlLrSznk6zE4ghp7evP1rfrXYAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIGCAAAAAAAAAAAAAAAAB/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=",
-  "stateHash": [
-    3,
-    33,
-    111,
-    220,
-    74,
-    123,
-    253,
-    76,
-    113,
-    96,
-    250,
-    148,
-    109,
-    27,
-    254,
-    69,
-    29,
-    19,
-    255,
-    50,
-    218,
-    73,
-    102,
-    9,
-    254,
-    24,
-    53,
-    82,
-    130,
-    185,
-    16,
-    198
-  ]
+  "stateHash": "0x03216fdc4a7bfd4c7160fa946d1bfe451d13ff32da496609fe18355282b910c6"
 }