[bug]: quit does not exit command in `robot create`

## Description

When in the multiselect page, where we select permissions, if we cancel using the `q` character, the program still executes and takes what we might have selected.
If nothing is selected, it shows `no permissions selected`, if we select something and then quit, it goes on ahead with no issues.

## Steps to Reproduce
1. Run command: `harbor-cli robot create`
2. With arguments/config: none
3. Fill placeholder name and description, and proceed to permission selection page
4. Select a permission but instead of moving forward, press `q` to quit.
5. The program continues and doesnt exist

## What you expected to happen.

Expected program to exit, and show a `user exited at system permission` message or similar.

## Actual Behavior

Continues to creation. Creates it successfully if you go through and fill rest of details.

## Environment
- OS: Fedora Linux
- Tool version: https://github.com/goharbor/harbor-cli/commit/455293c23d28c5fc6e67cb3bff7107d6cdf8403a