increase MAX_NEIGHBOURS from 8 to 50

variants/lilygo_tbeam_SX1262/platformio.ini

@@ -65,7 +65,7 @@ build_flags =
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
-  -D MAX_NEIGHBOURS=8
+  -D MAX_NEIGHBOURS=50
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${LilyGo_TBeam_SX1262.build_src_filter}
@@ -82,7 +82,7 @@ lib_deps =
 ;   -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=5
 ;   -D WITH_RS232_BRIDGE_TX=6
@@ -103,7 +103,7 @@ build_flags =
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
-  -D MAX_NEIGHBOURS=8
+  -D MAX_NEIGHBOURS=50
   -D WITH_ESPNOW_BRIDGE=1
   -D WITH_ESPNOW_BRIDGE_SECRET='"shared-secret"'
 ;  -D MESH_PACKET_LOGGING=1