onnxruntime

[QNN EP] Copy security catalog file for HtpV73Skel.so from QNN SDK (#19903)

### Description
Copies the `QNN_HOME/lib/hexagon-v73/unsigned/libqnnhtpv73.cat` file
from QNN SDK to the unittest build directory. This is necessary in order
to be able to load the `libQnnHtpV73Skel.so` file on Windows for modern
versions of QNN SDK.

### Motivation and Context
A [digitally-signed catalog
file](https://learn.microsoft.com/en-us/windows-hardware/drivers/install/catalog-files)
(.cat) can be used as a digital signature for an arbitrary collection of
files.