downgrade Filament libs to v1.34.2 for Windows

ios/include/viewer/Settings.h

@@ -160,10 +160,6 @@ struct DynamicLightingSettings {
     float zLightFar = 100;
 };
 
-struct FogSettings {
-    Texture* fogColorTexture = nullptr;
-};
-
 // This defines fields in the same order as the setter methods in filament::View.
 struct ViewSettings {
     // standalone View settings
@@ -189,7 +185,6 @@ struct ViewSettings {
     // Custom View Options
     ColorGradingSettings colorGrading;
     DynamicLightingSettings dynamicLighting;
-    FogSettings fogSettings;
 };
 
 template <typename T>