NotImplementedError in CFGEmulated

### Description

This bug happened after updating from angr version 9.2.102 to 9.2.116, the issue seems to stem from project.analyses.CFGEmulated(). Report bug to @rhelmot

File "/home/mk/.local/lib/python3.11/site-packages/angr/calling_conventions.py", line 1455, in next_arg
classification = self._classify(arg_type)
^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mk/.local/lib/python3.11/site-packages/angr/calling_conventions.py", line 1555, in _classify
raise NotImplementedError("Ummmmm... not sure what goes here. report bug to @rhelmot")
NotImplementedError: Ummmmm... not sure what goes here. report bug to @rhelmot



### Steps to reproduce the bug

binary not supported in file upload. Used binary from the TYGR source code c_cpp_O0/sys-process/usbtop-1.0/usbtop

the following code caused the error:
project = angr.Project(file_name, load_options={'auto_load_libs': False})
cfg = project.analyses.CFGEmulated(keep_state=True, state_add_options=angr.options.refs)

### Environment

_No response_

### Additional context

_No response_