increase MAX_NEIGHBOURS from 8 to 50

variants/waveshare_rp2040_lora/platformio.ini

@@ -40,7 +40,7 @@ build_flags = ${waveshare_rp2040_lora.build_flags}
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
-  -D MAX_NEIGHBOURS=8
+  -D MAX_NEIGHBOURS=50
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${waveshare_rp2040_lora.build_src_filter}
@@ -53,7 +53,7 @@ build_flags = ${waveshare_rp2040_lora.build_flags}
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
-  -D MAX_NEIGHBOURS=8
+  -D MAX_NEIGHBOURS=50
   -D WITH_RS232_BRIDGE=Serial2
   -D WITH_RS232_BRIDGE_RX=9
   -D WITH_RS232_BRIDGE_TX=8