Hang when hitting ctrl-D at prompt.

[pjcreath]

Issue

Hitting ^D at the initial prompt causes a runaway hang. Adding --verbose or --debug just fills the screen with newlines.

If I re-raise exceptions at aider/coders/base_coder.py lines 1288 and 1337, I get the following backtrace.

Backtrace

Traceback (most recent call last):
  File "aider-ce/aider/coders/base_coder.py", line 1246, in input_task
    user_message = self.io.input_task.result()
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "aider-ce/aider/coders/base_coder.py", line 1373, in get_input
    return await self.io.get_input(
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "aider-ce/aider/io.py", line 870, in get_input
    line = await self.prompt_session.prompt_async(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "aider-ce/env/lib/python3.12/site-packages/prompt_toolkit/shortcuts/prompt.py", line 1252, in prompt_async
    return await self.app.run_async(
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "aider-ce/env/lib/python3.12/site-packages/prompt_toolkit/application/application.py", line 886, in run_async
    return await _run_async(f)
           ^^^^^^^^^^^^^^^^^^^
  File "aider-ce/env/lib/python3.12/site-packages/prompt_toolkit/application/application.py", line 746, in _run_async
    result = await f
             ^^^^^^^
EOFError
Exception ignored in: 
Traceback (most recent call last):
  File "aider-ce/env/lib/python3.12/site-packages/litellm/llms/custom_httpx/http_handler.py", line 612, in __del__
  File "aider-ce/aider/main.py", line 485, in custom_tracer
ImportError: sys.meta_path is None, Python is likely shutting down

Version and model info

Aider v0.88.26

[dwash96]

Addressed in v0.88.27