fix: filter critical incidents warning to only count P1-P3 (#240)

The "critical incidents created in the past hour" warning was counting
all incidents regardless of priority. Now filters on priority value <= 3
(P1, P2, P3) to match the actual definition of critical incidents.

Author: NicolasLafitteMM

src/firefighter/slack/views/modals/open.py

@@ -172,7 +172,8 @@ def get_intro_blocks() -> list[Block]:
         ]
 
         recent_critical_incidents: int = Incident.objects.filter(
-            created_at__gte=timezone.now() - timedelta(hours=1)
+            created_at__gte=timezone.now() - timedelta(hours=1),
+            priority__value__lte=3,
         ).count()
         if recent_critical_incidents > 0:
             blocks.append(

src/firefighter/slack/views/modals/opening/check_current_incidents.py

@@ -37,8 +37,8 @@ def build_modal_fn(body: dict[str, Any], **kwargs: Any) -> View:
 
         incidents = list(
             Incident.objects.filter(
-
-                created_at__gte=datetime.now(UTC) - timedelta(hours=1)
+                created_at__gte=datetime.now(UTC) - timedelta(hours=1),
+                priority__value__lte=3,
             )
             .order_by("-created_at")
             .select_related(