fix eyetracker dependency

Source/StudyFrameworkPlugin/StudyFrameworkPlugin.Build.cs

@@ -45,7 +45,8 @@ public class StudyFrameworkPlugin : ModuleRules
                 "SlateCore",
                 "XRBase",
                 "DeveloperSettings",
-                "EngineSettings"
+                "EngineSettings",
+                "EyeTracker"
 				// ... add other public dependencies that you statically link with here ...
 			}
             );
@@ -59,8 +60,7 @@ public class StudyFrameworkPlugin : ModuleRules
                 "Slate",
                 "SlateCore",
                 "UniversalLogging",
-                "ToolWidgets",
-                "EyeTracker"
+                "ToolWidgets"
 				// ... add private dependencies that you statically link with here ...	
 			}
             );