fix(miner): recompute timestamp after sleep

[gzliudan]

Proposed changes

recompute timestamp after sleep

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[Copilot]

Pull request overview

Updates mining work creation to recompute the candidate block timestamp after any sleep, aiming to avoid stale timestamps when the parent block changes.

Changes:

• Recalculates tstart/tstamp after re-checking the parent block (post-sleep) in commitNewWork.

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[benjamin202410]

Can we somehow refactor the code? There is duplicated code

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Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

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[wanwiset25]

// Recalculate timestamp in case the parent changed while sleeping.

If we are recalculating because the parent changed, shouldn't sleep time also be checked again?

	if now := time.Now().Unix(); tstamp > now {
		wait := time.Duration(tstamp-now) * time.Second
		log.Info("Mining too far in the future", "wait", common.PrettyDuration(wait))
		time.Sleep(wait)
	}