Give the libnode smoke dispatcher the load entry the bridge requires

ABI 5 takes a load function from the bootstrap's dispatcher; without it
the smoke program's start fails with an incomplete dispatcher.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/libnode-common/smoke/smoke.c

@@ -46,7 +46,7 @@ static const char kBootstrap[] =
     "  },\n"
     "  setTimer() { return 0; }, clearTimer() {}, refTimer() {}, refreshTimer() {},\n"
     "  setImmediate() { return 0; }, clearImmediate() {}, refImmediate() {},\n"
-    "  nextTick() {}, emit() {},\n"
+    "  nextTick() {}, emit() {}, load() {},\n"
     "};\n";
 
 static double now_ms(void) {