Fix heatmap button args

handlers/system.py

@@ -13,8 +13,7 @@ from keyboards import (
     system_logs_integrations_kb,
     system_logs_kb,
     openwrt_kb,
-    docker_kb,
-    backup_kb,
+    docker_kb, backup_kb,
 )
 from system_checks import security, disks, hardware, list_disks, smart_last_test
 from services.http_checks import get_url_checks, check_url
@@ -490,9 +489,10 @@ async def incidents_diff(msg: Message):
 async def alerts_heatmap(msg: Message):
     if not is_admin_msg(msg):
         return
-    parts = msg.text.split()
     hours = 48
     category = None
+    if msg.text.startswith("/alerts_heatmap"):
+        parts = msg.text.split()
         for part in parts[1:]:
             if part.isdigit():
                 hours = max(1, int(part))