[heap] Disable some tests with --stress-concurrent-allocation

Tests aren't compatible with concurrent allocation on background threads.

Bug: v8:10315
Change-Id: I376e98858fa1aacf1689e6791985774299def319
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2418391Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69989}

test/cctest/heap/test-heap.cc

@@ -1635,6 +1635,7 @@ TEST(TestInternalWeakLists) {
 
 TEST(TestSizeOfRegExpCode) {
   if (!FLAG_regexp_optimization) return;
+  FLAG_stress_concurrent_allocation = false;
 
   v8::V8::Initialize();
 
@@ -1862,6 +1863,7 @@ static Address AlignOldSpace(AllocationAlignment alignment, int offset) {
 // Test the case where allocation must be done from the free list, so filler
 // may precede or follow the object.
 TEST(TestAlignedOverAllocation) {
+  if (FLAG_stress_concurrent_allocation) return;
   ManualGCScope manual_gc_scope;
   Heap* heap = CcTest::heap();
   // Test checks for fillers before and behind objects and requires a fresh

test/cctest/test-api.cc

@@ -28287,6 +28287,7 @@ TEST(TriggerDelayedMainThreadMetricsEvent) {
   using v8::Context;
   using v8::Local;
   using v8::MaybeLocal;
+  i::FLAG_stress_concurrent_allocation = false;
 
   // Set up isolate and context.
   v8::Isolate* iso = CcTest::isolate();