[CSA]: AllocateZeroedFixedDoubleArray used wrong ElementsKind

Change-Id: Ibfddd236dbe8b6a205a457aea1cb9eb00b0a3572
Reviewed-on: https://chromium-review.googlesource.com/1199403Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55548}

src/code-stub-assembler.h

@@ -1422,7 +1422,7 @@ class V8_EXPORT_PRIVATE CodeStubAssembler : public compiler::CodeAssembler {
   TNode<FixedDoubleArray> AllocateZeroedFixedDoubleArray(
       TNode<IntPtrT> capacity) {
     TNode<FixedDoubleArray> result = UncheckedCast<FixedDoubleArray>(
-        AllocateFixedArray(FLOAT64_ELEMENTS, capacity,
+        AllocateFixedArray(PACKED_DOUBLE_ELEMENTS, capacity,
                            AllocationFlag::kAllowLargeObjectAllocation));
     FillFixedDoubleArrayWithZero(result, capacity);
     return result;