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_manager.py

@@ -11,6 +11,7 @@ import pytest
 
 from homeassistant.components import bluetooth
 from homeassistant.components.bluetooth import (
+    MONOTONIC_TIME,
     BaseHaRemoteScanner,
     BluetoothChange,
     BluetoothScanningMode,
@@ -711,6 +712,7 @@ async def test_goes_unavailable_connectable_only_and_recovers(
                 advertisement_data.manufacturer_data,
                 advertisement_data.tx_power,
                 {"scanner_specific_data": "test"},
+                MONOTONIC_TIME(),
             )
 
     new_info_callback = async_get_advertisement_callback(hass)
@@ -883,6 +885,7 @@ async def test_goes_unavailable_dismisses_discovery_and_makes_discoverable(
                 advertisement_data.manufacturer_data,
                 advertisement_data.tx_power,
                 {"scanner_specific_data": "test"},
+                MONOTONIC_TIME(),
             )
 
         def clear_all_devices(self) -> None: