[DWARFLinkerParallel] Change more cases of compare_exchange_weak to compare_exchange_strong (#138692)

This is a follow-up to 07bc54b; this
fixes more occasional crashes in dsymutil on Windows on aarch64.

Author: mstorsjo

llvm/lib/DWARFLinker/Parallel/ArrayList.h

@@ -137,7 +137,7 @@ template <typename T, size_t ItemsGroupSize = 512> class ArrayList {
     NewGroup->Next = nullptr;
 
     // Try to replace current group with allocated one.
-    if (AtomicGroup.compare_exchange_weak(CurGroup, NewGroup))
+    if (AtomicGroup.compare_exchange_strong(CurGroup, NewGroup))
       return true;
 
     // Put allocated group as last group.