Ensure the stg / prod instance run the help handler in the right context (#3050)

Ensure the stg / prod instance run the help handler in the right context

As of now, the staging instance reacts to help commands intended for the production instance and vice versa. This fixes it.

Reviewed-by: gemini-code-assist[bot]
Reviewed-by: Nikola Forró
Reviewed-by: Laura Barcziová

Author: centosinfra-prod-github-app[bot]

packit_service/worker/jobs.py

@@ -1363,7 +1363,12 @@ def retrieve_comment_command_prefix(self, comment: str) -> Optional[str]:
         Returns:
             Packit comment command prefix or None if none is found.
         """
-        prefixes = ["/packit-ci-stg", "/packit-ci", "/packit-stg", "/packit"]
+        prefixes = None
+
+        if self.service_config.comment_command_prefix == "/packit-stg":
+            prefixes = ["/packit-ci-stg", "/packit-stg"]
+        else:
+            prefixes = ["/packit-ci", "/packit"]
 
         for prefix in prefixes:
             if comment.startswith(prefix):