Make the Android timer notification high priority (#123006)

homeassistant/components/mobile_app/timers.py

@@ -39,6 +39,8 @@ def async_handle_timer_event(
                     # Android
                     "channel": "Timers",
                     "importance": "high",
+                    "ttl": 0,
+                    "priority": "high",
                     # iOS
                     "push": {
                         "interruption-level": "time-sensitive",

tests/components/mobile_app/test_timers.py

@@ -61,6 +61,8 @@ async def test_timer_events(
             "channel": "Timers",
             "group": "timers",
             "importance": "high",
+            "ttl": 0,
+            "priority": "high",
             "push": {
                 "interruption-level": "time-sensitive",
             },