Merge pull request #20478 from sharwell/ordinal-comparer

Use an ordinal comparison in GetSourceSymbolsChecksumAsync

src/Workspaces/Core/Portable/FindSymbols/SymbolTree/SymbolTreeInfo_Source.cs

@@ -55,7 +55,7 @@ public static async Task<Checksum> GetSourceSymbolsChecksumAsync(Project project
 
             // Order the documents by FilePath.  Default ordering in the RemoteWorkspace is
             // to be ordered by Guid (which is not consistent across VS sessions).
-            var textChecksumsTasks = project.Documents.OrderBy(d => d.FilePath).Select(async d =>
+            var textChecksumsTasks = project.Documents.OrderBy(d => d.FilePath, StringComparer.Ordinal).Select(async d =>
             {
                 var documentStateChecksum = await d.State.GetStateChecksumsAsync(cancellationToken).ConfigureAwait(false);
                 return documentStateChecksum.Text;