[Windows] agentcore create hangs on "Prepare agentcore/ directory" until Enter is pressed

### Description

On Windows, `agentcore create` hangs at the `Prepare agentcore/ directory` step and does not continue until the user manually presses Enter.

A similar issue (#205) was previously reported and is marked as closed and fixed, but I am still experiencing the same behavior even after installing the latest version of the AgentCore CLI.

I am running the CLI from a WSL terminal.

### Steps to Reproduce

Open a WSL terminal on Windows through VS Code
Run agentcore create
Observe it hangs at the "Prepare agentcore/ directory" step
Press Enter — it continues

### Expected Behavior

agentcore create should proceed through all steps automatically without requiring manual key presses.

### Actual Behavior

The command hangs at "Prepare agentcore/ directory" until Enter is pressed.

### CLI Version

0.24.2

### Operating System

Windows

### Additional Context

WSL version: 2.7.11.0
Kernel version: 6.18.33.2-2
WSLg version: 1.0.73.2
MSRDC version: 1.2.7214
Direct3D version: 1.611.1-81528511
DXCore version: 10.0.26100.1-240331-1435.ge-release
Windows version: 10.0.26200.8875

Start with the `agentcore create` command and reproduce it from a WSL terminal opened through VS Code on Windows, focusing on the `Prepare agentcore/ directory` step. Compare the behavior with the earlier fix referenced in issue #205; done means the command proceeds automatically without requiring Enter.

Written by the indexing model from the issue text.