Interactive mode: BOOLEAN parameters have no completion suggestions

[jja6312]

Description

In interactive mode (oci -i), BOOLEAN parameters show no completion
suggestions when pressing Tab. An error appears in the bottom toolbar.

Steps to Reproduce

1. Start interactive mode: oci -i
2. Type a command with a BOOLEAN parameter and press Tab after the flag:

oci iam compartment list --compartment-id-in-subtree <TAB>

Expected Behavior

true and false are suggested as completions, consistent with how
enum parameters display their choices.

Actual Behavior

No completions appear. Error shown in the bottom toolbar.