Make syntax localization util internal instead of private (#2663)

Working on some cleanup of localization code, and this utility is
duplicated in PA Client.

src/libraries/Microsoft.PowerFx.Core/Localization/ExpressionLocalizationHelper.cs

@@ -1,42 +1,42 @@
-// Copyright (c) Microsoft Corporation.
-// Licensed under the MIT license.
-
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-using Microsoft.PowerFx.Core.Binding;
-using Microsoft.PowerFx.Core.Glue;
-using Microsoft.PowerFx.Syntax;
-using Microsoft.PowerFx.Types;
-
-namespace Microsoft.PowerFx.Core
-{
-    internal class ExpressionLocalizationHelper
-    {
-        internal static string ConvertExpression(string expressionText, RecordType parameters, BindingConfig bindingConfig, INameResolver resolver, IBinderGlue binderGlue, ParserOptions options, Features flags, bool toDisplay)
-        {
-            var targetLexer = toDisplay ? TexlLexer.GetLocalizedInstance(options?.Culture ?? CultureInfo.InvariantCulture) : TexlLexer.InvariantLexer;
-            var sourceLexer = toDisplay ? TexlLexer.InvariantLexer : TexlLexer.GetLocalizedInstance(options?.Culture ?? CultureInfo.InvariantCulture);
-
-            var worklist = GetLocaleSpecificTokenConversions(expressionText, sourceLexer, targetLexer);
-
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using Microsoft.PowerFx.Core.Binding;
+using Microsoft.PowerFx.Core.Glue;
+using Microsoft.PowerFx.Syntax;
+using Microsoft.PowerFx.Types;
+
+namespace Microsoft.PowerFx.Core
+{
+    internal class ExpressionLocalizationHelper
+    {
+        internal static string ConvertExpression(string expressionText, RecordType parameters, BindingConfig bindingConfig, INameResolver resolver, IBinderGlue binderGlue, ParserOptions options, Features flags, bool toDisplay)
+        {
+            var targetLexer = toDisplay ? TexlLexer.GetLocalizedInstance(options?.Culture ?? CultureInfo.InvariantCulture) : TexlLexer.InvariantLexer;
+            var sourceLexer = toDisplay ? TexlLexer.InvariantLexer : TexlLexer.GetLocalizedInstance(options?.Culture ?? CultureInfo.InvariantCulture);
+
+            var worklist = GetLocaleSpecificTokenConversions(expressionText, sourceLexer, targetLexer);
+
             var formula = new Formula(expressionText, toDisplay ? CultureInfo.InvariantCulture : options?.Culture ?? CultureInfo.InvariantCulture);
 
-            formula.EnsureParsed(options.GetParserFlags());
-
-            var binding = TexlBinding.Run(
-                binderGlue,
-                null,
-                new Core.Entities.QueryOptions.DataSourceToQueryOptionsMap(),
-                formula.ParseTree,
-                resolver,
-                bindingConfig,
-                ruleScope: parameters?._type,
-                updateDisplayNames: toDisplay,
-                forceUpdateDisplayNames: toDisplay,
-                features: flags);
-
-            foreach (var token in binding.NodesToReplace)
+            formula.EnsureParsed(options.GetParserFlags());
+
+            var binding = TexlBinding.Run(
+                binderGlue,
+                null,
+                new Core.Entities.QueryOptions.DataSourceToQueryOptionsMap(),
+                formula.ParseTree,
+                resolver,
+                bindingConfig,
+                ruleScope: parameters?._type,
+                updateDisplayNames: toDisplay,
+                forceUpdateDisplayNames: toDisplay,
+                features: flags);
+
+            foreach (var token in binding.NodesToReplace)
             {
                 worklist.Add(token.Key.Span, TexlLexer.EscapeName(token.Value));
             }
@@ -49,7 +49,7 @@ namespace Microsoft.PowerFx.Core
             return ConvertExpression(expressionText, parameters, bindingConfig, resolver, binderGlue, new ParserOptions() { Culture = culture }, flags, toDisplay);
         }
 
-        private static IDictionary<Span, string> GetLocaleSpecificTokenConversions(string script, TexlLexer sourceLexer, TexlLexer targetLexer)
+        internal static IDictionary<Span, string> GetLocaleSpecificTokenConversions(string script, TexlLexer sourceLexer, TexlLexer targetLexer)
         {
             var worklist = new Dictionary<Span, string>();
 
@@ -104,4 +104,4 @@ namespace Microsoft.PowerFx.Core
             return worklist;
         }
     }
-}
+}