WIP: Fix agama_auto expect timeout

[mdoucha]

The boot_agama module switches away from the installation console. Make sure that RebootPage::expect_is_shown() looks for the finish screen on the right console.

Fixes #22437

• Related ticket: N/A
• Needles: N/A
• Verification run: https://openqa.suse.de/tests/18206418

[jknphy]

Looks reasonable if the initial console is not the same for all archs/backend, is that the case, right?
@okynos please sync here for more verification in other archs/backend, thanks!
#22473

[okynos]

Yes let me do some VRs

[mdoucha]

So apparently, installation is not the right console to get back to the graphical installer either...
https://openqa.suse.de/tests/18206418#step/agama_auto/2

[okynos]

It is because installation is not saved as needle take a look at this VR https://openqa.suse.de/tests/18206556 (I added installation tag in the needle)

This is because there is no previous console saved in a needle

[okynos]

I will revert the original PR because it seems to fail in another places like https://openqa.suse.de/tests/18206546

[mdoucha]

It is because installation is not saved as needle take a look at this VR https://openqa.suse.de/tests/18206556 (I added installation tag in the needle)

This is because there is no previous console saved in a needle

That's nice, but on the PPC it switches to a third console instead of the first one. Adding a needle tag to the installer screenshot won't help when you'll get a console with login prompt and QR code instead.