Fix Editor crash in Mac

Merge pull request #1150 from aws-lumberyard-dev/LYN-3450

Registry/Platform/Mac/streamer.editor.setreg

@@ -0,0 +1,33 @@
+{
+    "Amazon":
+    {
+        "AzCore":
+        {
+            "Streamer":
+            {
+                "Profiles":
+                {
+                    "Generic":
+                    {
+                        "Stack":
+                        [
+                            {
+                                "$type": "AZ::IO::StorageDriveConfig",
+                                // The maximum number of file handles that the drive will cache.
+                                // On Mac the default limit for the number of file handles an application
+                                // can have open is set to 256. So we need to set this to a lower value than on PC.
+                                // This limit is set by "launchctl limit maxfiles"
+                                "MaxFileHandles": 65
+                            },
+                            {
+                                "$type": "AzFramework::RemoteStorageDriveConfig",
+                                // The maximum number of file handles that the drive will cache.
+                                "MaxFileHandles": 1024
+                            }
+                        ]
+                    }
+                }
+            }
+        }
+    }
+}