Address ENG-10519.
Updated createMainCompaction to:

• Use random backup data key passed from Rust
• Update current logs key to let all future logs belonging to the new backup be encrypted with the new key

Updated Rust to use random keys for UserData compaction backup, left UserKeys-only backup untouched.

Depends on D14797

Sent a few DMs/created drafts -> Created UserData backup -> A few more DMs/drafts to generate logs -> Primary logged out, then restored primary. All DMs/drafts were restored.
Also, used some logging to make sure backup keys have correct values and logs are decrypted correctly.