Isolate BLE advertisement parser exceptions

[IoannisArmamentos]

Summary

Prevent a malformed BLE advertisement from terminating scanning for an entire HCI adapter.

Problem

Exceptions raised by individual BLE parsers could propagate through the shared parsing pipeline into the aioblescan/asyncio transport callback.

When this happens, asyncio closes the transport and BLE scanning for that adapter stops until the inactivity watchdog restarts it.

A single malformed or unexpected advertisement can therefore interrupt updates for every device using the same adapter.

Fix

Contain parser exceptions at the individual advertisement-report level inside parse_raw_data_reports().

If one report raises an exception:

• only that report is skipped
• sibling reports in the same HCI batch continue to be processed
• subsequent advertisements continue normally
• transport and watchdog behavior remain unchanged

Parser failures are logged at debug level to avoid malformed recurring advertisements flooding normal Home Assistant logs.

Regression tests verify both per report isolation and that parser exceptions no longer propagate through process_hci_events().

This provides defensive isolation for the class of transport failures demonstrated in #1510.