set companion radios with esp32c3 esp32c6 and esp32s3 boards to max 300 contacts

variants/heltec_v3/platformio.ini

@@ -72,7 +72,7 @@ lib_deps =
 extends = Heltec_lora32_v3
 build_flags =
   ${Heltec_lora32_v3.build_flags}
-  -D MAX_CONTACTS=100
+  -D MAX_CONTACTS=300
   -D MAX_GROUP_CHANNELS=1
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1