[turbofan] Adding missing DecompressionElimination flag check

Effect control linearization knows about compressed values only when
DecompressionElimination is active.

Bug: v8:7703
Change-Id: I7854488322f846f94c644e057ab1c32641adf662
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1883896Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64637}

src/compiler/effect-control-linearizer.cc

@@ -6012,7 +6012,7 @@ Node* EffectControlLinearizer::LowerFindOrderedHashMapEntryForInt32Key(
     auto if_match = __ MakeLabel();
     auto if_notmatch = __ MakeLabel();
     auto if_notsmi = __ MakeDeferredLabel();
-    if (COMPRESS_POINTERS_BOOL) {
+    if (COMPRESS_POINTERS_BOOL && FLAG_turbo_decompression_elimination) {
       __ GotoIfNot(ObjectIsSmi(candidate_key), &if_notsmi);
       __ Branch(__ Word32Equal(ChangeCompressedSmiToInt32(candidate_key), key),
                 &if_match, &if_notmatch);