Handling of redirected input

[denis256]

Description

Included changes:

• added check for available terminal
• improved signaling of stdout reading termination

Adding a test for this case is challenging since all tests are executed in non-interactive shell.

Before:

After:

Fixes #3450.

TODOs

Read the Gruntwork contribution guidelines.

• Update the docs.
• Run the relevant tests successfully, including pre-commit checks.
• Ensure any 3rd party code adheres with our license policy or delete this line if its not applicable.
• Include release notes. If this PR is backward incompatible, include a migration guide.

Release Notes (draft)

Added / Removed / Updated [X].

Fixed handling of input from console redirection.

Migration Guide