fix: 🐛 Restore compilation of modified C++ files

Author: nedseb

pxt.mk

@@ -19,7 +19,7 @@ PXT_INIT_ARGS ?=
 PXT_INSTALL_ARGS ?= 
 PXT_NPMINSTALLNATIVE_ARGS ?= 
 PXT_RUN_ARGS ?= 
-PXT_SERVE_ARGS ?= --localbuild --rebundle --noauth --no-browser --no-serial -h '0.0.0.0'
+PXT_SERVE_ARGS ?= --no-browser --no-serial -h '0.0.0.0'
 PXT_STATICPKG_ARGS ?= -o ../static/ --localbuild
 PXT_TAG_ARGS ?=
 PXT_TESTGHPKGS_ARGS ?=