Replace magic number with RECEIVE_THREAD_JOIN_TIMEOUT constant

Author: jeremiah-k

meshtastic/ble_interface.py

@@ -28,6 +28,7 @@
 logger = logging.getLogger(__name__)
 
 DISCONNECT_TIMEOUT_SECONDS = 5.0
+RECEIVE_THREAD_JOIN_TIMEOUT = 2.0
 
 
 class BLEInterface(MeshInterface):
@@ -278,7 +279,7 @@ def close(self) -> None:
         if self._want_receive:
             self._want_receive = False  # Tell the thread we want it to stop
             if self._receiveThread:
-                self._receiveThread.join(timeout=2)
+                self._receiveThread.join(timeout=RECEIVE_THREAD_JOIN_TIMEOUT)
                 self._receiveThread = None
 
         client = self.client