video_core: Never apply AF to None mipmap mode

Should fix some artifacts with the "apply anisotropic filtering for all mipmap modes" option

src/video_core/textures/texture.cpp

@@ -62,9 +62,10 @@ std::array<float, 4> TSCEntry::BorderColor() const noexcept {
 }
 
 float TSCEntry::MaxAnisotropy() const noexcept {
-    if (max_anisotropy == 0 && (depth_compare_enabled.Value() ||
-                                (mipmap_filter != TextureMipmapFilter::Linear &&
-                                 !Settings::values.use_aggressive_anisotropic_filtering))) {
+    const bool suitable_mipmap_filter = Settings::values.use_aggressive_anisotropic_filtering
+                                            ? mipmap_filter != TextureMipmapFilter::None
+                                            : mipmap_filter != TextureMipmapFilter::Linear;
+    if (max_anisotropy == 0 && (depth_compare_enabled.Value() || !suitable_mipmap_filter)) {
         return 1.0f;
     }
     const auto anisotropic_settings = Settings::values.max_anisotropy.GetValue();