we aren't yet storing tophone messages across deep sleep, so shrink this

mesh.options

@@ -9,7 +9,9 @@
 
 # FIXME pick a higher number someday? or do dynamic alloc in nanopb?
 *DeviceState.node_db max_count:32
-*DeviceState.receive_queue max_count:32
+
+# FIXME - max_count is actually 32 but we save/load this as one long string of preencoded MeshPacket bytes - not a big array in RAM
+*DeviceState.receive_queue max_count:1
 
 *RouteDiscovery.route max_count:8