Disable PartitionAllocTest.PartialPageFreelists on mac arm-64

It was reenabled in crrev.com/c/3220877, but this test is still failing. Not reverting that CL since the other test reenabled is fine.

Bug: 1154345
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: Ia813cce53bc2e737ceeda7ca26bea2ade03e1892
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3224964
Commit-Queue: Rakina Zata Amni <rakina@chromium.org>
Owners-Override: Rakina Zata Amni <rakina@google.com>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/main@{#931856}

base/allocator/partition_allocator/partition_alloc_unittest.cc

@@ -1277,8 +1277,13 @@ TEST_F(PartitionAllocTest, ReallocDirectMapAlignedRelocate) {
   allocator.root()->Free(ptr2);
 }
 
-// Tests the handing out of freelists for partial slot spans.
-TEST_F(PartitionAllocTest, PartialPageFreelists) {
+#if defined(OS_MAC) && defined(ARCH_CPU_ARM64)
+// Bulk-disabled on mac-arm64 for bot stabilization: https://crbug.com/1154345
+#define MAYBE_PartialPageFreelists DISABLED_PartialPageFreelists
+#else
+#define MAYBE_PartialPageFreelists PartialPageFreelists
+#endif
+TEST_F(PartitionAllocTest, MAYBE_PartialPageFreelists) {
   size_t big_size = SystemPageSize() - kExtraAllocSize;
   size_t bucket_index = SizeToIndex(big_size + kExtraAllocSize);
   PartitionRoot<ThreadSafe>::Bucket* bucket =