EMSUSD-1504 add back missing MayaUSD localization

The MEl version of localized strings for MayaUSdLib was lost. It is only used in the "Add Maya Reference" dialog and was not noticed during testing.

lib/mayaUsd/resources/scripts/CMakeLists.txt

@@ -1,4 +1,5 @@
 list(APPEND scripts_src
+    mayaUsdLibRegisterStrings.mel
     mayaUsdLibRegisterStrings.py
     mayaUsdAddMayaReference.mel
     mayaUsdAddMayaReference.py

lib/mayaUsd/resources/scripts/mayaUsdLibRegisterStrings.mel

@@ -0,0 +1,20 @@
+// Copyright 2022 Autodesk
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+global proc string getMayaUsdLibString(string $key)
+{
+    return getPluginResource("mayaUsdLib", $key);
+}
+

lib/mayaUsd/resources/scripts/mayaUsdLibRegisterStrings.py

@@ -197,10 +197,7 @@ def registerPluginResource(pluginId, stringId, resourceStr):
     '''See registerPluginResource.mel in Maya.
 
     Unfortunately there is no equivalent python version of this MEL proc
-    so we created our own version of it here.
-    
-    We also re-implement it here because we don't want warnings when registering
-    the same string again, which happens when re-loading the plugin.'''
+    so we created our own version of it here.'''
 
     fullId = 'p_%s.%s' % (pluginId, stringId)
     if cmds.displayString(fullId, exists=True):

plugin/adsk/scripts/mayaUSDRegisterStrings.mel

@@ -28,6 +28,7 @@ global proc mayaUSDRegisterStrings()
     python("import mayaUSDRegisterStrings; mayaUSDRegisterStrings.mayaUSDRegisterStrings()");
 
     // Register the strings from the MayaUsd Lib.
+    source "mayaUSDLibRegisterStrings.mel";
     python("import mayaUsdLibRegisterStrings; mayaUsdLibRegisterStrings.mayaUsdLibRegisterStrings()");
 
     // load any localized resources