Fix localization for Spanish Civil 3D (#9876)

* Fix tooltip for Spanish Civil 3D

In AutoCAD/Civil3D, `CurrentUICulture.ToString()` will return traditional `es-ES_tradnl`,
instead of plain `es-ES`. This will fail the finding of xml document later.

This change uses `CurrentUICulture.Name` instead.
From MS DOC for `CultureInfo.Name`:
> Gets the culture name in the format languagecode2-country/regioncode2.

* More fix for samples and gallery

src/DynamoCore/Configuration/PathManager.cs

@@ -543,7 +543,7 @@ private static string GetSamplesFolder(string dataRootDirectory)
                 dataRootDirectory = Directory.GetParent(versionedDirectory).FullName;
             }
 
-            var uiCulture = CultureInfo.CurrentUICulture.ToString();
+            var uiCulture = CultureInfo.CurrentUICulture.Name;
             var sampleDirectory = Path.Combine(dataRootDirectory, SamplesDirectoryName, uiCulture);
 
             // If the localized samples directory does not exist then fall back 
@@ -582,7 +582,7 @@ private static string GetGalleryDirectory(string commonDataDir)
                 commonDataDir = Directory.GetParent(versionedDirectory).FullName;
             }
 
-            var uiCulture = CultureInfo.CurrentUICulture.ToString();
+            var uiCulture = CultureInfo.CurrentUICulture.Name;
             var galleryDirectory = Path.Combine(commonDataDir, GalleryDirectoryName, uiCulture);
 
             // If the localized gallery directory does not exist then fall back 

src/DynamoCore/Library/DocumentationServices.cs

@@ -67,7 +67,7 @@ private static bool ResolveForAssembly(string assemblyLocation,
                 baseDir = Path.GetDirectoryName(Path.GetFullPath(assemblyLocation));
             }
 
-            var language = System.Threading.Thread.CurrentThread.CurrentUICulture.ToString();
+            var language = System.Threading.Thread.CurrentThread.CurrentUICulture.Name;
             //try with the system culture
             var localizedDocPath = Path.Combine(baseDir, language);
 

src/DynamoCoreWpf/ViewModels/Core/DynamoViewModel.cs

@@ -1373,7 +1373,7 @@ private void ShowOpenDialogAndOpenResult(object parameter)
             {
                 Assembly dynamoAssembly = Assembly.GetExecutingAssembly();
                 string location = Path.GetDirectoryName(dynamoAssembly.Location);
-                string UICulture = CultureInfo.CurrentUICulture.ToString();
+                string UICulture = CultureInfo.CurrentUICulture.Name;
                 string path = Path.Combine(location, "samples", UICulture);
 
                 if (Directory.Exists(path))