all: make timestamp-based fork checks based on uint64 (#26474)

This PR changes the API so that uint64 is used for fork timestamps.
It's a good choice because types.Header also uses uint64 for time.

Co-authored-by: Felix Lange <fjl@twurst.com>

tests/init.go

@@ -24,6 +24,8 @@ import (
 	"github.com/ethereum/go-ethereum/params"
 )
 
+func u64(val uint64) *uint64 { return &val }
+
 // Forks table defines supported forks and their chain config.
 var Forks = map[string]*params.ChainConfig{
 	"Frontier": {
@@ -264,7 +266,7 @@ var Forks = map[string]*params.ChainConfig{
 		ArrowGlacierBlock:       big.NewInt(0),
 		MergeNetsplitBlock:      big.NewInt(0),
 		TerminalTotalDifficulty: big.NewInt(0),
-		ShanghaiTime:            big.NewInt(0),
+		ShanghaiTime:            u64(0),
 	},
 }
 

tests/state_test.go

@@ -183,7 +183,7 @@ func runBenchmark(b *testing.B, t *StateTest) {
 				b.Error(err)
 				return
 			}
-			var rules = config.Rules(new(big.Int), false, new(big.Int))
+			var rules = config.Rules(new(big.Int), false, 0)
 
 			vmconfig.ExtraEips = eips
 			block := t.genesis(config).ToBlock()