miner: fix state commit, track old work packages too (#17490)

* miner: commit state which is relative with sealing result

* consensus, core, miner, mobile: introduce sealHash interface

* miner: evict pending task with threshold

* miner: go fmt

consensus/clique/clique.go

@@ -673,6 +673,11 @@ func CalcDifficulty(snap *Snapshot, signer common.Address) *big.Int {
 	return new(big.Int).Set(diffNoTurn)
 }
 
+// SealHash returns the hash of a block prior to it being sealed.
+func (c *Clique) SealHash(header *types.Header) common.Hash {
+	return sigHash(header)
+}
+
 // Close implements consensus.Engine. It's a noop for clique as there is are no background threads.
 func (c *Clique) Close() error {
 	return nil