* Heltec tracker, now using /ui-new

* variants with no DISPLAY_CLASS .ini fixes

variants/xiao_c3/platformio.ini

@@ -66,7 +66,7 @@ lib_deps =
 [env:Xiao_C3_companion_radio_ble]
 extends = Xiao_esp32_C3
 build_src_filter = ${Xiao_esp32_C3.build_src_filter}
-  +<../examples/companion_radio>
+  +<../examples/companion_radio/*.cpp>
   +<helpers/esp32/*.cpp>
 build_flags =
   ${Xiao_esp32_C3.build_flags}
@@ -89,7 +89,7 @@ lib_deps =
 [env:Xiao_C3_companion_radio_usb]
 extends = Xiao_esp32_C3
 build_src_filter = ${Xiao_esp32_C3.build_src_filter}
-  +<../examples/companion_radio>
+  +<../examples/companion_radio/*.cpp>
   +<helpers/esp32/*.cpp>
 build_flags =
   ${Xiao_esp32_C3.build_flags}