[OpenMP] Recover non-blocking target nowait disabled by D141232

[jdoerfert]

LG, I guess we need to backport this too, right?

openmp/libomptarget/src/interface.cpp

 /// \param ThreadLimit Limit to the number of threads to use in the kernel
 ///                    launch, 0 indicates it was unspecified.
 /// \param HostPtr  The pointer to the host function registered with the kernel.
 /// \param Args     All arguments to this kernel launch (see struct definition).
 EXTERN int __tgt_target_kernel(ident_t *Loc, int64_t DeviceId, int32_t NumTeams,
                                int32_t ThreadLimit, void *HostPtr,
                                KernelArgsTy *KernelArgs) {
   TIMESCOPE_WITH_IDENT(Loc);
+  if (KernelArgs->Flags.NoWait)
+    return targetKernel<TaskAsyncInfoWrapperTy>(
+        Loc, DeviceId, NumTeams, ThreadLimit, HostPtr, KernelArgs);
+  else
     return targetKernel<AsyncInfoTy>(Loc, DeviceId, NumTeams, ThreadLimit,
                                      HostPtr, KernelArgs);
 }
 
 /// Implements a target kernel entry that replays a pre-recorded kernel.
 /// \param Loc Source location associated with this target region (unused).
 /// \param DeviceId The device identifier to execute the target region.
 /// \param HostPtr A pointer to an address that uniquely identifies the kernel.
 /// \param DeviceMemory A pointer to an array storing device memory data to move
 ///                     prior to kernel execution.