TfLite: dynamic sized tensors not supported by XNNPACK
Hi @suyash-narain,

Please verify the issue with latest release TF 2.16.1 with the comitt[ 525cc3b](https://github.com/tensorflow/tensorflow/commit/525cc3b31afb9c656e73810a8210e30cf347b51a).

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 > Hi @suyash-narain,
> 
> Please verify the issue with latest release TF 2.16.1 with the comitt[ 525cc3b](https://github.com/tensorflow/tensorflow/commit/525cc3b31afb9c656e73810a8210e30cf347b51a).
> 
> Thank You

That helps, but it isn't enough to just have the commit - it needs to be enabled by defining XNNPACK_DELEGATE_ENABLE_SUBGRAPH_RESHAPING=1 for the compiler.
### Issue type

Bug

### Have you reproduced the bug with TensorFlow Nightly?

Yes

### Source

source

### TensorFlow version

tf-nightly 

### Custom code

Yes

### OS platform and distribution

Linux Ubuntu 22.04

### Mobile device

_No response_

### Python version

python 3.10.12

### Bazel version

6.5.0

### GCC/compiler version

_No response_

### CUDA/cuDNN version

_No response_

### GPU model and memory

_No response_

### Current behavior?

I am using the master branch of tensorflow. I built tensorflow-lite using bazel 6.5.0 on linux ubuntu 22.04 x86 system. 
The nightly version has this commit already: https://github.com/tensorflow/tensorflow/commit/525cc3b31afb9c656e73810a8210e30cf347b51a

But when I build the tflite benchmark_model as well as tflite benchmark_model_plus_flex, the xnnpack delegate fails to apply.

I am using the attached tflite model: whisper-tiny-en.tflite 

[whisper-tiny-en.zip](https://github.com/tensorflow/tensorflow/files/14517043/whisper-tiny-en.zip)

I get the below error message: 

> 'Attempting to use a delegate that only supports static-sized tensors with a graph that has dynamic-sized tensors (tensor #220 is a dynamic-sized tensor)'
> ERROR: Failed to apply XNNPACK delegate
> ERROR: Benchmarking failed

I don't face this error when --use_xnnpack=0

are dynamic-sized tensors still not supported for tflite on xnnpack?

thanks

### Standalone code to reproduce the issue

```shell
./benchmark_model --graph=whisper-tiny-en.tflite --use_xnnpack=1
INFO: STARTING!
INFO: Log parameter values verbosely: [0]
INFO: Num threads: [4]
INFO: Graph: [whisper-tiny-en.tflite]
INFO: #threads used for CPU inference: [4]
INFO: Use xnnpack: [1]
INFO: Loaded model whisper-tiny-en.tflite
INFO: Created TensorFlow Lite XNNPACK delegate for CPU.
INFO: XNNPACK delegate created.
WARNING: Attempting to use a delegate that only supports static-sized tensors with a graph that has dynamic-sized tensors (tensor#1046 is a dynamic-sized tensor).
ERROR: Failed to apply XNNPACK delegate.
ERROR: Benchmarking failed.
```


### Relevant log output

_No response_