api: let /api/jobs/ base directory return a 404 (#57970)

tests/api/test_all.py

@@ -249,3 +249,10 @@ def test_afterjobs_status(pub):
             'completion_status': '',
         },
     }
+
+
+def test_afterjobs_base_directory(pub):
+    # missing signature
+    get_app(pub).get('/api/jobs/', status=403)
+    # base directory is 404
+    get_app(pub).get(sign_url('/api/jobs/?orig=coucou', '1234'), status=404)

wcs/api.py

@@ -1217,7 +1217,7 @@ class AfterJobDirectory(Directory):
 
 
 class AfterJobsDirectory(Directory):
-    _q_exports = ['']
+    _q_exports = []
 
     def _q_lookup(self, component):
         api_user = get_user_from_api_query_string()