chore: remove the readOnly exclusion by adding a patch file (#2624)

AI-assisted: Claude Code (Opus 4.6)

Signed-off-by: Debarati Basu-Nag <dbasunag@redhat.com>

Author: dbasunag

catalog/clients/python/patches/include-readonly-timestamps.patch

@@ -0,0 +1,14 @@
+--- a/catalog/clients/python/src/catalog_openapi/models/catalog_model.py
++++ b/catalog/clients/python/src/catalog_openapi/models/catalog_model.py
+@@ -79,10 +79,7 @@
+         * OpenAPI `readOnly` fields are excluded.
+         * OpenAPI `readOnly` fields are excluded.
+         """
+-        excluded_fields: Set[str] = set([
+-            "create_time_since_epoch",
+-            "last_update_time_since_epoch",
+-        ])
++        excluded_fields: Set[str] = set([])
+
+         _dict = self.model_dump(
+             by_alias=True,