Add explanation for max_count-guarding

Author: bouwew

plugwise_usb/nodes/helpers/pulses.py

@@ -893,6 +893,8 @@ def _logs_missing(self, from_timestamp: datetime) -> list[int] | None:
             return None
 
         # Collect any missing address in current range, within MAX_LOG_HOURS timeframe
+        # The max_count-guarding has been added for when an outdated logrecord is present in the cache,
+        # this will result in the unwanted collection of missing logs outside the MAX_LOG_HOURS timeframe
         address = last_address
         slot = last_slot
         count = 0