storage: EnvStats doesn't include blob file count

[RaduBerinde]

cockroach/pkg/storage/pebble.go

Line 2051 in cc61b3c

stats.TotalFiles = 3 /* CURRENT, MANIFEST, OPTIONS */

	m := p.db.Metrics()
	stats.TotalFiles = 3 /* CURRENT, MANIFEST, OPTIONS */
	stats.TotalFiles += uint64(m.WAL.Files) + m.Table.Zombie.All.Count + uint64(m.WAL.ObsoleteFiles) + m.Table.Obsolete.All.Count
	stats.TotalBytes = m.WAL.Size + m.Table.Zombie.All.Bytes + m.Table.Obsolete.All.Bytes
	for _, l := range m.Levels {
		stats.TotalFiles += l.Tables.Count
		stats.TotalBytes += l.Tables.Bytes
	}

I am refactoring and fixing this code on master; filing this issue to track a small fix on 25.4 and 25.3.

Jira issue: CRDB-56166