fix flag

Author: LongCatIsLooong

registry/DanTup_tiler.test

@@ -11,4 +11,6 @@ fetch=git -C tests submodule init
 fetch=git -C tests submodule update --recursive
 update=.
 test=flutter analyze --no-fatal-infos
-test=USE_FLUTTER_TEST_FONT=1 flutter test test
+test.windows=set USE_FLUTTER_TEST_FONT=1
+test.posix=env USE_FLUTTER_TEST_FONT=1
+test=flutter test test