thinknode m1: add missing GPS page to new UI

variants/thinknode_m1/platformio.ini

@@ -83,6 +83,7 @@ build_flags =
   -D PIN_BUZZER=6
   -D AUTO_SHUTDOWN_MILLIVOLTS=3300
   -D QSPIFLASH=1
+  -D ENV_INCLUDE_GPS=1
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${ThinkNode_M1.build_src_filter}