cryptsetup: call crypt_load() for LUKS only once
The crypt_load() for LUKS2 can read a quite big area of disk
(metadata area size is configurable and can increase up to megabytes).
This initialization is not needed to be repeated, just use the existing context.
(This patch is also required for the following change.)
(cherry picked from commit ea9a9d49e4af31c49e5c216e7e5e2f533e727579)
Related: #1719153
patch_name: 0205-cryptsetup-call-crypt_load-for-LUKS-only-once.patch
present_in_specfile: true
location_in_specfile: 205
squash_commits: true