QA:Testcase webui partitioning guided encrypted

Associated release criterion
This test case is associated with the Fedora_42_Beta_Release_Criteria#guided-partitioning release criterion. If you are doing release validation testing, a failure of this test case may be a breach of that release criterion. If so, please file a bug and nominate it as blocking the appropriate milestone, using the blocker bug nomination page.

Description

This test case tests whether encryption can be successfully used during a guided partitioning-based system installation.

Setup

1. Prepare a test system with a working, supported storage device of sufficient size for a Fedora install, and a Fedora installation medium that uses the webui-based installer. Currently, that means using the Workstation live image.

How to test

1. Boot the webui-based installer using any available means. Currently, that means using the Workstation live image and selecting "Install to Disk..." at the end of the initial setup process.
2. Ensure the target device you prepared is selected as the installation target disk.
3. Ensure the option to let the installer handle partitioning is set.
4. Select the option to encrypt the installation ("Encrypt my data") and complete this screen.
5. After installation is complete, perform QA:Testcase_base_startup to ensure the installed system boots correctly with the encrypted partition.
6. Complete the installation process, making sensible selections for all other installer options.
7. Boot the installed system.

Expected Results

1. The expected partition layout should be created on the target device(s).
2. The install process should complete successfully and the installed system should boot as expected.
3. The system should prompt for the encryption passphrase early in the boot process, and successfully unlock the encrypted partitions and complete boot only if the correct passphrase is entered.