Prune ancient data doesn't work in case PathScheme or TrieDirtyDisabled

[klim0v]

bsc/core/blockchain.go

Lines 1828 to 1836 in df229e7

	// If node is running in path mode, skip explicit gc operation
	// which is unnecessary in this mode.
	if bc.triedb.Scheme() == rawdb.PathScheme {
	return nil
	}
	// If we're running an archive node, always flush
	if bc.cacheConfig.TrieDirtyDisabled {
	return bc.triedb.Commit(root, false)
	}

In either of these two cases, we miss rawdb.WriteSafePointBlockNumber

So, which causes the ancient pruning check to fail

bsc/core/rawdb/prunedfreezer.go

Lines 269 to 274 in 82e0d8c

	stableStabeNumber := ReadSafePointBlockNumber(nfdb)
	switch {
	case stableStabeNumber < params.StableStateThreshold:
	log.Debug("Stable state block not old enough", "number", stableStabeNumber)
	backoff = true
	continue

[klim0v]

@j75689