Debugger view raises error

**Describe the bug**
When the logic flow reaches the `import pudb; pu.db`, it opens the debugger window, however, with an error at the bottom, i.e.
```
DEBUG pudb.debugger.ThreadsafeRawScreen.wait_for_input_ready Waiting for input: descriptors=[, <_io.TextIOWrapper name='' mode='r' encoding='utf-8'>], timeout=None
```
This causes any key press to be unusable, which when pressed, the error keeps repeating.

**To Reproduce**
Steps to reproduce the behavior:

Use `import pudb; pu.db` with Python 3.12.

**Expected behavior**
The debugger view should be free from any error & any key press shouldn't propogate the error further.

**Screenshots**

**Versions**
Python: 3.12.11
pudb: 2025.1

Reproduce the issue by running `import pudb; pu.db` under Python 3.12 and observe the debugger view and repeated input error. Trace the debugger's input handling from this entry point; done means key presses work normally and the reported error no longer appears.

Written by the indexing model from the issue text.