Fix missing header `<algorithm>` in tensor_ptr.h (#6778)
This commit import header <algorithm> explictly in extension/tensor/tensor_ptr.h,
which uses `std::transfrom` defined in the header.
Some recent compilers emits error (I checked gcc 14.1.0 / clang 18.1.6):
```
.../executorch/extension/tensor/tensor_ptr.h:114:12: error: no member named
'transform' in namespace 'std'
```
diff --git a/extension/tensor/tensor_ptr.h b/extension/tensor/tensor_ptr.h
index f41c6f7..3259bdb 100644
--- a/extension/tensor/tensor_ptr.h
+++ b/extension/tensor/tensor_ptr.h
@@ -8,6 +8,7 @@
#pragma once
+#include <algorithm>
#include <functional>
#include <memory>
#include <vector>
