databases/mariadb104-server: Fix DB corruption

• InnoDB corrupts files due to incorrect st_blksize calculation

PR: 257728, 257958
Reported by: mfechner, iron udjin gmail com
Obtained from: https://jira.mariadb.org/projects/MDEV/issues/MDEV-26537
MFH: 2021Q3

(cherry picked from commit 15c1622ad8fa4271d5f18831528af4d5b215e79e)