Respect mipmap_filter when create ImageDescriptor with linear()/neare…

…st() (bevyengine#6349)

Respect mipmap_filter when create ImageDescriptor with linear()/nearest()

# Objective

Fixes bevyengine#6348

## Migration Guide

This PR changes default `ImageSettings` and may lead to unexpected behaviour for existing projects with mipmapped textures. Users should provide custom `ImageSettings` resource with `mipmap_filter=FilterMode::Nearest` if they want to  keep old behaviour.

Co-authored-by: Yakov Borevich <j.borevich@gmail.com>

crates/bevy_render/src/texture/image.rs

@@ -144,6 +144,7 @@ impl ImageSampler {
         wgpu::SamplerDescriptor {
             mag_filter: wgpu::FilterMode::Linear,
             min_filter: wgpu::FilterMode::Linear,
+            mipmap_filter: wgpu::FilterMode::Linear,
             ..Default::default()
         }
     }
@@ -154,6 +155,7 @@ impl ImageSampler {
         wgpu::SamplerDescriptor {
             mag_filter: wgpu::FilterMode::Nearest,
             min_filter: wgpu::FilterMode::Nearest,
+            mipmap_filter: wgpu::FilterMode::Nearest,
             ..Default::default()
         }
     }