mesa-libgallium and mesa-va-drivers/mesa-vdpau-drivers versions mismatch in stable-brackports causes mesa drivers removal on apt full-upgrade

i don't know if issue is unique to my machine /my configuration is 
bordering on being frankendebian/ or more wide

as usual i tried to update my machine, and on `sudo apt full-upgrade` 
saw this:

```
Upgrading:
   libegl-mesa0:i386  libegl-mesa0  libgbm-dev  libgbm1:i386 libgbm1  
libgl1-mesa-dri:i386  libgl1-mesa-dri libglx-mesa0:i386  libglx-mesa0  
mesa-libgallium:i386 mesa-libgallium

REMOVING:
   mesa-va-drivers:i386  mesa-va-drivers mesa-vdpau-drivers:i386  
mesa-vdpau-drivers

Summary:
   Upgrading: 11, Installing: 0, Removing: 4, Not Upgrading: 0
   Download size: 21.9 MB
   Space needed: 4,789 kB / 42.0 GB available

Continue? [Y/n] n
Abort.

```

as i understand, lib packages in stable-backports has been updated to 
26.* version, while mesa drivers are still 25.* - and since full-upgrade 
ignores automatic/manual flags on these packages and may even remove 
some packages - it suggest removing drivers, while upgrading library files

```

mesa-libgallium/stable-backports 26.1.2-1~bpo13+1 amd64 [upgradable 
from: 25.2.6-1~bpo13+1]
mesa-libgallium/now 25.2.6-1~bpo13+1 amd64 [installed,upgradable to: 
26.1.2-1~bpo13+1]
mesa-libgallium/stable 25.0.7-2+deb13u1 amd64

mesa-va-drivers/stable-backports,now 25.2.6-1~bpo13+1 amd64 [installed]
mesa-va-drivers/stable 25.0.7-2+deb13u1 amd64

mesa-vdpau-drivers/stable-backports,now 25.2.6-1~bpo13+1 amd64 [installed]
mesa-vdpau-drivers/stable 25.0.7-2+deb13u1 amd64
```


did i bork my system with apt tweaking/pinning or is it issue with 
debian trixie-backports repository?