[wasm] Use real limit to initialize stack view

Using the jslimit can race with a concurrent interrupt request.
Also remove one unnecessary indirection.

R=ahaas@chromium.org

Bug: v8:12343
Change-Id: I8b6cc726124797e3687854b1eb2cd57d822c4769
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3247036Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77576}

src/wasm/stacks.h

@@ -34,7 +34,7 @@ class StackMemory {
   // Returns a non-owning view of the current stack.
   static StackMemory* GetCurrentStackView(Isolate* isolate) {
     byte* limit =
-        *reinterpret_cast<byte**>(isolate->stack_guard()->address_of_jslimit());
+        reinterpret_cast<byte*>(isolate->stack_guard()->real_jslimit());
     return new StackMemory(limit);
   }