Issue5221 (#5222)

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#### Summary <!-- Provide a general summary of your changes -->
Set page Word Templates extensible = true, set table Word Templates
Related Table Access = Public.

#### Work Item(s) <!-- Add the issue number here after the #. The issue
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Fixes #5221

Fixes
[AB#610460](https://dynamicssmb2.visualstudio.com/1fcb79e7-ab07-432a-a3c6-6cf5a88ba4a5/_workitems/edit/610460)

Author: ThomasKlockenbusch-AINO

src/System Application/App/Word Templates/src/WordTemplates.Page.al

@@ -22,7 +22,7 @@ page 9989 "Word Templates"
     InsertAllowed = false;
     Permissions = tabledata "Word Template" = rmd,
                   tabledata "Word Templates Related Table" = r;
-    Extensible = false;
+    Extensible = true;
 
     layout
     {

src/System Application/App/Word Templates/src/WordTemplatesRelatedTable.Table.al

@@ -12,7 +12,7 @@ using System.Reflection;
 /// </summary>
 table 9990 "Word Templates Related Table"
 {
-    Access = Internal;
+    Access = Public;
     Extensible = false;
     InherentEntitlements = X;
     InherentPermissions = X;