Add better failure handling in case CephFS with fscrypt fails#5115

Draft

nixpanic wants to merge 2 commits intoceph:develfrom nixpanic:issue/RHSTOR-6834

+135-7

Commits on Jan 29, 2025

util: prevent a panic when creating an fscrypt protector failed
nixpanic
committed

Commits on Jan 30, 2025

util: fscrypt requires keys of 32 bytes
nixpanic
committed