api/chrono: does not return HTTP 500 with error "too busy" (#84817)

src/ants_hub/api/views/chrono.py

@@ -378,7 +378,6 @@ class RendezVousDisponibleView(View):
                                 'err': 1,
                                 'error': 'busy',
                             },
-                            status=500,
                         )
                     time.sleep(settings.ANTS_HUB_BUSY_BACKOFF * 2**i)
         except (ValueError, ValidationError) as e:

tests/api/test_chrono.py

@@ -1255,7 +1255,6 @@ def test_rendez_vous_disponibles_database_is_busy(django_app, db, monkeypatch, s
                 }
             ]
         },
-        status=500,
     )
 
     assert call_count == 4