Make ur_context_handle_t_ destructor non-throwing (#20887)

UR_CHECK_ERROR may throw or abort, which is unsafe to use from a
destructor. If an exception escapes during stack unwinding,
std::terminate would be called.

Replace UR_CHECK_ERROR in ur_context_handle_t_ destructor with a
non-throwing, best-effort cleanup. In debug builds, failures are
reported via assert/log, while release builds avoid throwing from the
destructor.

fixes: intel/llvm#20811

Author: kekaczma

source/adapters/cuda/context.hpp

@@ -107,14 +107,14 @@ struct ur_context_handle_t_ : ur::cuda::handle_base {
     UR_CHECK_ERROR(urAdapterRetain(ur::cuda::adapter));
   };
 
-  ~ur_context_handle_t_() {
+  ~ur_context_handle_t_() noexcept {
     if (MemoryPoolHost) {
       umfPoolDestroy(MemoryPoolHost);
     }
     if (MemoryProviderHost) {
       umfMemoryProviderDestroy(MemoryProviderHost);
     }
-    UR_CHECK_ERROR(urAdapterRelease(ur::cuda::adapter));
+    urAdapterRelease(ur::cuda::adapter);
   }
 
   void invokeExtendedDeleters() {

source/adapters/hip/context.hpp

@@ -96,9 +96,7 @@ struct ur_context_handle_t_ : ur::hip::handle_base {
     UR_CHECK_ERROR(urAdapterRetain(ur::hip::adapter));
   };
 
-  ~ur_context_handle_t_() {
-    UR_CHECK_ERROR(urAdapterRelease(ur::hip::adapter));
-  }
+  ~ur_context_handle_t_() noexcept { urAdapterRelease(ur::hip::adapter); }
 
   ur_context_handle_t_(const ur_context_handle_t_ &) = delete;