set max contacts to 350 and channels to 40 for esp32c3, s3 and c6

variants/heltec_wireless_paper/platformio.ini

@@ -38,8 +38,8 @@ extends = Heltec_Wireless_Paper_base
 build_flags =
   ${Heltec_Wireless_Paper_base.build_flags}
   -I examples/companion_radio/ui-new
-  -D MAX_CONTACTS=300
-  -D MAX_GROUP_CHANNELS=8
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
   -D DISPLAY_CLASS=E213Display
   -D BLE_PIN_CODE=123456   ; dynamic, random PIN
   -D BLE_DEBUG_LOGGING=1