build: update test-wpt-report to use NODE instead of OUT_NODE

Author: panva

Makefile

@@ -659,7 +659,7 @@ test-wpt: all ## Run the Web Platform Tests.
 test-wpt-report: ## Run the Web Platform Tests and generate a report.
 	$(RM) -r out/wpt
 	mkdir -p out/wpt
-	-WPT_REPORT=1 $(PYTHON) tools/test.py --shell $(OUT_NODE) $(PARALLEL_ARGS) wpt
+	-WPT_REPORT=1 $(PYTHON) tools/test.py --shell $(NODE) $(PARALLEL_ARGS) wpt
 	$(NODE) "$$PWD/tools/merge-wpt-reports.mjs"
 
 .PHONY: test-internet