Fix using emscripten 3.1.27+

emscripten 3.1.27 reduced the stack size from 5MB to 64KB. This caused
run-time errors: Uncaught RuntimeError: index out of bounds

Co-authored-by: James Darpinian <jdarpinian@gmail.com>

Makefile

@@ -1062,7 +1062,7 @@ ifeq ($(PLATFORM),emscripten)
   USE_RENDERER_DLOPEN=0
 
   BASE_CFLAGS=-fPIC -s USE_SDL=2
-  LDFLAGS=-s TOTAL_MEMORY=256mb -s MAX_WEBGL_VERSION=2 --preload-file $(BASEGAME)
+  LDFLAGS=-s STACK_SIZE=5MB -s TOTAL_MEMORY=256MB -s MAX_WEBGL_VERSION=2 --preload-file $(BASEGAME)
   OPTIMIZEVM = -O3
   OPTIMIZE = $(OPTIMIZEVM)