Fix missing shader file in packaged build and startup on broken gizmo material

Source/Editor/Gizmo/TransformGizmoBase.Draw.cs

@@ -81,7 +81,8 @@ namespace FlaxEditor.Gizmo
             _isDisabled = ShouldGizmoBeLocked();
 
             float brightness = _isDisabled ? options.Visual.TransformGizmoBrightnessDisabled : options.Visual.TransformGizmoBrightness;
-            if (Mathf.NearEqual(brightness, (float)_materialAxisX.GetParameterValue(_brightnessParamName)))
+            var currentValue = _materialAxisX.GetParameterValue(_brightnessParamName);
+            if (currentValue is not float currentValueFloat || Mathf.NearEqual(brightness, currentValueFloat))
                 return;
             _materialAxisX.SetParameterValue(_brightnessParamName, brightness);
             _materialAxisY.SetParameterValue(_brightnessParamName, brightness);

Source/ThirdParty/FidelityFX/FidelityFX.Build.cs

@@ -1,7 +1,8 @@
 // Copyright (c) Wojciech Figat. All rights reserved.
 
 using Flax.Build;
-using Flax.Build.NativeCpp;
+using System.Collections.Generic;
+using System.IO;
 
 /// <summary>
 /// https://github.com/GPUOpen-LibrariesAndSDKs/FidelityFX-SDK
@@ -19,4 +20,12 @@ public class FidelityFX : HeaderOnlyModule
         // Merge third-party modules into engine binary
         BinaryModuleName = "FlaxEngine";
     }
+
+    /// <inheritdoc />
+    public override void GetFilesToDeploy(List<string> files)
+    {
+        base.GetFilesToDeploy(files);
+
+        files.AddRange(Directory.GetFiles(FolderPath, "*.h", SearchOption.AllDirectories));
+    }
 }