les: historical data garbage collection (#19570)

This change introduces garbage collection for the light client. Historical
chain data is deleted periodically. If you want to disable the GC, use
the --light.nopruning flag.

core/genesis.go

@@ -285,7 +285,7 @@ func (g *Genesis) ToBlock(db ethdb.Database) *types.Block {
 		head.Difficulty = params.GenesisDifficulty
 	}
 	statedb.Commit(false)
-	statedb.Database().TrieDB().Commit(root, true)
+	statedb.Database().TrieDB().Commit(root, true, nil)
 
 	return types.NewBlock(head, nil, nil, nil)
 }