Add decomposition for unsqueeze_copy (#130942)

* Extracted from #128416
Pull Request resolved: https://github.com/pytorch/pytorch/pull/130942
Approved by: https://github.com/peterbell10
diff --git a/test/test_mps.py b/test/test_mps.py
index 74bf819..90fe6e8 100644
--- a/test/test_mps.py
+++ b/test/test_mps.py
@@ -352,6 +352,7 @@
         'unsafe_chunk',
         'unsafe_split',
         'unsqueeze',
+        'unsqueeze_copy',
         'view_as',
         'view_as_real',
         'view',