src: remove preview for heap dump utilities

At least `createHeapSnapshotStream()` and `triggerHeapSnapshot()`
do have side effects, and more importantly, they should not be
run transparently. Without this, typing e.g. `v8.getHeapSnapshot()`
into the REPL will result in a crash or infinite loop while the REPL
evaluates the expression for a preview.

PR-URL: #31570
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

src/heap_utils.cc

@@ -385,15 +385,9 @@ void Initialize(Local<Object> target,
                 void* priv) {
   Environment* env = Environment::GetCurrent(context);
 
-  env->SetMethodNoSideEffect(target,
-                             "buildEmbedderGraph",
-                             BuildEmbedderGraph);
-  env->SetMethodNoSideEffect(target,
-                             "triggerHeapSnapshot",
-                             TriggerHeapSnapshot);
-  env->SetMethodNoSideEffect(target,
-                             "createHeapSnapshotStream",
-                             CreateHeapSnapshotStream);
+  env->SetMethod(target, "buildEmbedderGraph", BuildEmbedderGraph);
+  env->SetMethod(target, "triggerHeapSnapshot", TriggerHeapSnapshot);
+  env->SetMethod(target, "createHeapSnapshotStream", CreateHeapSnapshotStream);
 
   // Create FunctionTemplate for HeapSnapshotStream
   Local<FunctionTemplate> os = FunctionTemplate::New(env->isolate());