simple_repeater: Include ongoing RX processing in hasPendingWork()

If the radio driver state machine is not in receive mode, this means
that processing of a packet is still in progress and we are not in an
idle state.

Signed-off-by: Frieder Schrempf <frieder@fris.de>

Author: fschrempf

examples/simple_repeater/MyMesh.cpp

@@ -1222,5 +1222,5 @@ bool MyMesh::hasPendingWork() const {
 #if defined(WITH_BRIDGE)
   if (bridge.isRunning()) return true;  // bridge needs WiFi radio, can't sleep
 #endif
-  return _mgr->getOutboundCount(0xFFFFFFFF) > 0;
+  return (_mgr->getOutboundCount(0xFFFFFFFF) > 0) || !radio_driver.isInRecvMode();
 }