Update on "[ET-VK][int4] Wrap int4 linear calls with view_copy nodes to squeeze/unsqueeze inputs"

This is done automatically for full-precision linear/mm nodes in the graph at torch.export graph tracing time, but is not done for the int4 op.

The new pass adds view_copy nodes, as there are subsequent passes which can fuse view_copy nodes if redundant, and convert view_copy nodes to squeeze/unsqueeze nodes.

Differential Revision: [D69065866](https://our.internmc.facebook.com/intern/diff/D69065866/)

[ghstack-poisoned]

Author: Nathanael See

backends/vulkan/_passes/squeeze_int4_linear_inputs.py

@@ -62,4 +62,3 @@ def _squeezable(shape: List[int]) -> bool:
             kwargs,
             meta,
         )
-    

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

@@ -352,8 +352,8 @@ void add_q_4w_linear_node(
       local_wg_size,
       // Inputs and Outputs
       {{out_W_packed, vkapi::MemoryAccessType::WRITE},
-       {{mat1_W_packed, mat2, scales_and_zeros}, 
-       vkapi::MemoryAccessType::READ}},
+       {{mat1_W_packed, mat2, scales_and_zeros},
+        vkapi::MemoryAccessType::READ}},
       // Shader params buffers
       ubos,
       // Specialization Constants