Fix policheck error (#9311)

Fixes policheck:Error

Changes Made

Skip the non en-us locale resource files.
Skip the file that contains the specified entity names in the deprecated folder
Change country to country/region based on https://policheck.microsoft.com/Pages/TermInfo.aspx?LCID=9&TermID=79570

Testing
Test with MSBuild pipeline build https://devdiv.visualstudio.com/DevDiv/_build/results?buildId=8509007&view=logs&j=7d9eef18-6720-5c1f-4d30-89d7b76728e9&t=c5a86041-9185-53e8-42a2-1cadc4486f0d&l=5251. There are no active results now.

Author: JaynieBai

eng/policheck_exclusions.xml

@@ -10,4 +10,8 @@
   <!--<Exclusion Type="FileName">ABC.TXT|XYZ.CS</Exclusion>-->
 
   <Exclusion Type="FolderPathFull">.DOTNET</Exclusion>
-</PoliCheckExclusions>
+  <!-- This file contains entity names that were written out by the XML writer in the VS.NET 2002/2003 project system. Leave them unchanged and skip the file -->
+  <Exclusion Type="FileName">OLDVSPROJECTFILEREADER.CS</Exclusion>
+  <!-- Since only support the locale en-us in our repo, skip the translated files currently. https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1889125  -->
+  <Exclusion Type="FileType">.XLF</Exclusion>
+</PoliCheckExclusions>

src/Tasks/AssemblyDependency/GenerateBindingRedirects.cs

@@ -171,7 +171,7 @@ private static bool IsMatch(AssemblyName suggestedRedirect, string name, string
             var cultureString = suggestedRedirect.CultureName;
             if (String.IsNullOrEmpty(cultureString))
             {
-                // We use "neutral" for "Invariant Language (Invariant Country)" in assembly names.
+                // We use "neutral" for "Invariant Language (Invariant Country/Region)" in assembly names.
                 cultureString = "neutral";
             }
 

src/Tasks/AssemblyDependency/ResolveAssemblyReference.cs

@@ -1207,7 +1207,7 @@ quiet at the engine level.
 
                                         assemblyIdentityAttributes.Add(new XAttribute("name", idealRemappingPartialAssemblyName.Name));
 
-                                        // We use "neutral" for "Invariant Language (Invariant Country)" in assembly names.
+                                        // We use "neutral" for "Invariant Language (Invariant Country/Region)" in assembly names.
                                         var cultureString = idealRemappingPartialAssemblyName.CultureName;
                                         assemblyIdentityAttributes.Add(new XAttribute("culture", String.IsNullOrEmpty(idealRemappingPartialAssemblyName.CultureName) ? "neutral" : idealRemappingPartialAssemblyName.CultureName));