[Combatability] Sky is reflected harshly on rough material

[F3der1co]

Tested versions

• Reproducible in: v4.4.dev2.official

System information

Godot v4.4.dev2 - Windows 10.0.22631 - OpenGL 3 (Compatibility) - NVIDIA GeForce RTX 4070 (NVIDIA; 32.0.15.5585) - AMD Ryzen 7 5800X 8-Core Processor (16 Threads)

Issue description

The sky panorama texture is shown in a harsh way on the model in the compatability renderer (material with roughness of 1).
It seems like the compatability renderer uses a small mip-map to make it seem soft, so it might not be a bug.
But imo it's not enough and makes it look really distracting/ugly and hurts the sense of material.

The issue becomes really obvious if compared to the mobile renderer:

COMPATABILITY:

MOBILE (material still looks like it has high roughness and is less distracting)

Steps to reproduce

run project.

Minimal reproduction project (MRP)

compatSkyIssue.zip

[F3der1co]

just found this report, which seems to be the same issue
#95091