SG-35561 Update the test case for permissions and availability (#437)

Author: kuldeepgudekar

tests/test_api.py

@@ -1960,18 +1960,20 @@ def test_export_page_unavailable(self):
             return
 
         page_entity = self.sg.create("Page", {"entity_type": "Shot"})
+        error_messages = [
+            "This functionality is currently not available",
+            f"Export for Page id={page_entity['id']} not available",
+        ]
 
         with self.assertRaises(Exception) as cm:
             self.sg.export_page(page_entity["id"], "csv")
-        self.assertIn(
-            f"This functionality is currently not available", str(cm.exception)
-        )
+        msg = str(cm.exception)
+        self.assertIn(msg, error_messages)
 
         with self.assertRaises(Exception) as cm:
             self.sg.export_page(page_entity["id"], "csv", layout_name="My Layout")
-        self.assertIn(
-            f"This functionality is currently not available", str(cm.exception)
-        )
+        msg = str(cm.exception)
+        self.assertIn(msg, error_messages)
 
     def test_export_page_format_missing(self):
         """