Update on "[ET-VK][8/n] Unsqueeze"

Exploit the fact that, we reduce the unsqueeze operation to permute.

```
torch.all(torch.permute(x.unsqueeze(0), [1, 0, 2, 3]) == x.unsqueeze(1))
torch.all(torch.permute(x.unsqueeze(0), [1, 2, 0, 3]) == x.unsqueeze(2))
torch.all(torch.permute(x.unsqueeze(0), [1, 2, 3, 0]) == x.unsqueeze(3))
```

This diff introduce a minor change to the Permute implementation that it no longer requires the input dimension length to match the length of the permute array. This allows the `unsqueeze` operation to achieve a no-op `unsqueeze(0)` and then apply a permute.

Differential Revision: [D56347734](https://our.internmc.facebook.com/intern/diff/D56347734/)

[ghstack-poisoned]

Author: yipjustin

backends/vulkan/runtime/graph/ops/impl/Permute.h

@@ -6,6 +6,8 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+#pragma once
+
 #include <executorch/backends/vulkan/runtime/api/api.h>
 
 #include <executorch/backends/vulkan/runtime/graph/ComputeGraph.h>

backends/vulkan/runtime/graph/ops/impl/Unsqueeze.cpp

@@ -8,11 +8,8 @@
 
 #include <executorch/backends/vulkan/runtime/graph/ops/OperatorRegistry.h>
 
-#include <executorch/backends/vulkan/runtime/api/api.h>
-
 #include <executorch/backends/vulkan/runtime/graph/ops/impl/Permute.h>
 #include <executorch/backends/vulkan/runtime/graph/ops/impl/utils/KernelUtils.h>
-#include <executorch/backends/vulkan/runtime/graph/ops/impl/utils/TensorUtils.h>
 #include <executorch/backends/vulkan/runtime/graph/ops/utils/ShaderNameUtils.h>
 
 namespace vkcompute {