fix: raising a string causes typeerror instead of intended validation error

[huyhoang171106]

Description

In Python 3, raise "..." is invalid because exceptions must derive from BaseException. When a malformed app entry is encountered (len(matches) != 1), this path crashes with TypeError: exceptions must derive from BaseException, masking the real input problem and breaking the CI check.

Severity: high
File: ensure_sorted.py

Expected Behavior

The code should handle this case properly to avoid unexpected errors or degraded quality.

[offa]

Fixed, thanks!