increase MAX_NEIGHBOURS from 8 to 50

variants/lilygo_tdeck/platformio.ini

@@ -87,7 +87,7 @@ build_flags =
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
-  -D MAX_NEIGHBOURS=8
+  -D MAX_NEIGHBOURS=50
 build_src_filter = ${LilyGo_TDeck.build_src_filter}
   +<../examples/simple_repeater>
   +<helpers/ui/ST7789LCDDisplay.cpp>