Fix timestamps for bluetooth scanners that bundle advertisements (#94511)

#94138 added support for raw/bundled advertisements. We should use the
same monotonic time for all advertisements in the bundle if not time
is passed, or calculate the timestamp and pass it if its known

tests/components/bluetooth/test_api.py

@@ -1,8 +1,12 @@
 """Tests for the Bluetooth integration API."""
+import time
+
 from bleak.backends.scanner import AdvertisementData, BLEDevice
+import pytest
 
 from homeassistant.components import bluetooth
 from homeassistant.components.bluetooth import (
+    MONOTONIC_TIME,
     BaseHaRemoteScanner,
     BaseHaScanner,
     HaBluetoothConnector,
@@ -31,6 +35,11 @@ async def test_scanner_by_source(hass: HomeAssistant, enable_bluetooth: None) ->
     assert async_scanner_by_source(hass, "hci2") is None
 
 
+async def test_monotonic_time() -> None:
+    """Test monotonic time."""
+    assert MONOTONIC_TIME() == pytest.approx(time.monotonic(), abs=0.1)
+
+
 async def test_async_scanner_devices_by_address_connectable(
     hass: HomeAssistant, enable_bluetooth: None
 ) -> None:
@@ -51,6 +60,7 @@ async def test_async_scanner_devices_by_address_connectable(
                 advertisement_data.manufacturer_data,
                 advertisement_data.tx_power,
                 {"scanner_specific_data": "test"},
+                MONOTONIC_TIME(),
             )
 
     new_info_callback = manager.scanner_adv_received