fix: broken scale-monitor-framebuffer

[befanyt]

This PR tries to fix #1843

Enabled glib-combile-schemas --strict again and strips out incompatible schema values (pre F41) via dirty sed:
, 'xwayland-native-scaling' and accent-color="slate"

Probably there are nicer ways to do this, but it results in strict checked schemas as tested on latest, gts and beta:

❯ rpm-ostree status
State: idle
AutomaticUpdates: stage; rpm-ostreed-automatic.timer: no runs since boot
Deployments:
● ostree-unverified-registry:ghcr.io/befanyt/bluefin:gts
                   Digest: sha256:7b19b8a71a101a9e405b4605e0750aff4e2b2d234f3c4a46f722fdcaa3174a30
                  Version: 39.20241027.0 (2024-10-28T20:46:13Z)

❯ gsettings get org.gnome.mutter experimental-features
['scale-monitor-framebuffer']

❯ rpm-ostree status
State: idle
AutomaticUpdates: stage; rpm-ostreed-automatic.timer: no runs since boot
Deployments:
● ostree-unverified-registry:ghcr.io/befanyt/bluefin:latest
                   Digest: sha256:52c1eacb99b1b00ac9952ab64b77067629b51aba92ed78e34c40544300bbc0fa
                  Version: 40.20241027.0 (2024-10-28T20:40:52Z)

❯ gsettings get org.gnome.mutter experimental-features
['scale-monitor-framebuffer']

❯ rpm-ostree status
State: idle
AutomaticUpdates: stage; rpm-ostreed-automatic.timer: no runs since boot
Deployments:
● ostree-unverified-registry:ghcr.io/befanyt/bluefin:beta
                   Digest: sha256:a5df3522395ac2231e96171d922528c1b64f0b26f14345b0b98060c5f2c546f3
                  Version: 41.20241028.0 (2024-10-28T20:46:52Z)

❯ gsettings get org.gnome.mutter experimental-features
['scale-monitor-framebuffer', 'xwayland-native-scaling']

Instead of current behavior:

❯ rpm-ostree status
State: idle
AutomaticUpdates: stage; rpm-ostreed-automatic.timer: no runs since boot
Deployments:
● ostree-image-signed:docker://ghcr.io/ublue-os/bluefin:latest
                   Digest: sha256:a39aa0fe06b2b04ebe2890b963eef9277c7442c7aebf891d761c27c4a42199d2
                  Version: 40.20241027.0 (2024-10-28T21:18:19Z)

❯ gsettings get org.gnome.mutter experimental-features
@as []

[castrojo]

Oh this might be a better solution compared to what I just did, which was match bazzite, which has a working config: #1846

Happy to undo that and go with this if it works though! Let me gather some reviewers.

[befanyt]

Oh you already did a fix! I didn't see that. Well, whatever fixes the issue 👍

[castrojo]

I haven't tested it yet though, yours for sure works so let's hold onto this, running out of time for release so it might be worth backing mine out and landing this.

I pushed it to latest though.

[Malix-Labs]

Need #1846 to be reverted before merging

[Malix-Labs]

This PR tries to solve #1843

@befanyt can you change that part to fix #1843 please ?

[castrojo]

I can set the issue states by hand, please use emojis instead of posting small comments, we get an email every time you post!