[kbn-repo-packages] Add sort locale (#199138)

In some situations `yarn kbn bootstrap` is causing the sort order of
tsconfig.base.json to change.

This adds a locale to the comparative to keep the sort order consistent.

(cherry picked from commit 935c3aa)

packages/kbn-repo-packages/modern/package.js

@@ -44,7 +44,7 @@ class Package {
    * @param {Package} b
    */
   static sorter(a, b) {
-    return a.manifest.id.localeCompare(b.manifest.id);
+    return a.manifest.id.localeCompare(b.manifest.id, 'en');
   }
 
   /**