fix: set dummy camera description

Author: mihakrajnc

Explorer/ProjectSettings/ProjectSettings.asset

@@ -657,7 +657,7 @@ PlayerSettings:
   enableInternalProfiler: 0
   logObjCUncaughtExceptions: 1
   enableCrashReportAPI: 0
-  cameraUsageDescription: 
+  cameraUsageDescription: Not used
   locationUsageDescription: 
   microphoneUsageDescription: This app requires access to the microphone for voice
     chat functionality.