Change Details

Part of [ENG-9656](https://linear.app/comm/issue/ENG-9656/native-changes-for-minimal-version-of-backup) This was introduced mostly for testing purposes, there is no need to restore everything at once, we need to: 1. Restore Backup Data on Secondary Device Auth 2. Download User Keys to be able to decrypt Data and sign new device list using old account, and then separately restore only Backup Data during Restore protocol We can test is as it should be (later in the stack), but this code is now hard to maintain and keeping this add a lot of additional and not needed work. Depends on D14003

Part of [ENG-9656](https://linear.app/comm/issue/ENG-9656/native-changes-for-minimal-version-of-backup) This was introduced mostly for testing purposes, there is no need to restore everything at once, we need to: 1. Restore Backup Data on Secondary Device Auth 2. Download User Keys to be able to decrypt data and sign a new device list using the old account, and then separately restore only Backup Data during the Restore protocol We can test it as it should be (later in the stack), but this code is now hard to maintain, and keeping this adds a lot of additional and not needed work. Depends on D14003

Part of [ENG-9656](https://linear.app/comm/issue/ENG-9656/native-changes-for-minimal-version-of-backup) This was introduced mostly for testing purposes, there is no need to restore everything at once, we need to: 1. Restore Backup Data on Secondary Device Auth 2. Download User Keys to be able to decrypt Ddata and sign a new device list using the old account, and then separately restore only Backup Data during the Restore protocol We can test ist as it should be (later in the stack), but this code is now hard to maintain, but this code is now hard to maintain and keeping this adds a lot of additional and not needed work. Depends on D14003