[turboprop] Disable Float poisoning test

Bug: v8:9684
Change-Id: I6988579693788d5bbc878c63269fe7c1bec65831
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1845223
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64143}

test/cctest/test-poison-disasm-arm64.cc

@@ -164,6 +164,8 @@ TEST(DisasmPoisonPolymorphicLoad) {
 TEST(DisasmPoisonMonomorphicLoadFloat64) {
 #ifdef ENABLE_DISASSEMBLER
   if (i::FLAG_always_opt || !i::FLAG_opt) return;
+  // TODO(9684): Re-enable for TurboProp if necessary.
+  if (i::FLAG_turboprop) return;
 
   i::FLAG_allow_natives_syntax = true;
   i::FLAG_untrusted_code_mitigations = true;