Fix loop increment issue and add test

[adam-alchemy]

Motivation

There's a bug in the loop increment for the loupe functions for retrieving execution hooks and permitted call hooks: it is duplicated across the for loop line and at the end of the loop, within an unchecked block.

Thank you @leekt for finding this issue.

Solution

Remove the extra loop increment, and add a test that retrieves >1 execution hooks and permitted call hooks.