zfs: merge openzfs/zfs@a0b2a93c4

Notable upstream pull request merges:
#15660 66670ba9f fix(mount): do not truncate shares not zfs mount
#15719 3bddc4dae spa: Fix FreeBSD sysctl handlers (already merged)
#15719 5a703d136 spa: Let spa_taskq_param_get()'s addition of a newline

be optional

#15721 6138af86b Stop wasting time on malloc in snprintf_zstd_header
#15723 1f5bf9600 Make zdb -R a little more sane.
#15726 20dd16d9f Make zdb -R scale less poorly
#15737 d9885b377 fix: Uber block label not always found for aux vdevs
#15737 2df2a58dc Extend aux label to add path information
#15737 b64be1624 Add path handling for aux vdevs in label_path
#15747 a1771d243 Fix "out of memory" error
#15752 1a11ad9d2 Fix a potential use-after-free in zfs_setsecattr()
#15772 f45dd90f3 Fix cloning into mmaped and cached file
#15781 1494e8fba Autotrim High Load Average Fix

Obtained from: OpenZFS
OpenZFS commit: a0b2a93c41b0b0d7723d1b20eb1eca7a1a63e45b