[Authz] migration for sharedUX routes without access tags (elastic#20…

…6308)

## Summary

Relates to elastic/kibana-team#1236, this PR
tackles routes could not have been migrated automatically by the
security team. Following the guidance provided in the aforementioned
issue leveraging util provided by the security team have been employed
to explain why the routes modified in this PR aren't requiring an
specific kind of privilege.


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Co-authored-by: Elastic Machine <[email protected]>

src/platform/packages/shared/content-management/favorites/favorites_server/src/favorites_routes.ts

@@ -90,8 +90,13 @@ export function registerFavoritesRoutes({
           )
         ),
       },
-      // we don't protect the route with any access tags as
-      // we only give access to the current user's favorites ids
+      security: {
+        authz: {
+          enabled: false,
+          reason:
+            "we don't protect the route with any access tags as we only give access to the current user's favorites ids",
+        },
+      },
     },
     async (requestHandlerContext, request, response) => {
       const coreRequestHandlerContext = await requestHandlerContext.core;
@@ -148,8 +153,13 @@ export function registerFavoritesRoutes({
           type: typeSchema,
         }),
       },
-      // we don't protect the route with any access tags as
-      // we only give access to the current user's favorites ids
+      security: {
+        authz: {
+          enabled: false,
+          reason:
+            "we don't protect the route with any access tags as we only give access to the current user's favorites ids",
+        },
+      },
     },
     async (requestHandlerContext, request, response) => {
       const coreRequestHandlerContext = await requestHandlerContext.core;
@@ -187,8 +197,13 @@ export function registerFavoritesRoutes({
           type: typeSchema,
         }),
       },
-      // we don't protect the route with any access tags as
-      // we only give access to the current user's favorites ids
+      security: {
+        authz: {
+          enabled: false,
+          reason:
+            "we don't protect the route with any access tags as we only give access to the current user's favorites ids",
+        },
+      },
     },
     async (requestHandlerContext, request, response) => {
       const coreRequestHandlerContext = await requestHandlerContext.core;