Allow shortcut key to be configurable

Problem/Motivation

Alt+s (Option+s) happens to be a shortcut to type a Polish character of "ś". I imagine there are other languages with common problem. Can you suggest how to turn this off, please?

This is a follow up to #3056856: Create a keyboard shortcut to toggle access the search functionality → to discuss
1) If this should be configurable (i.e. you can turn it off) and
2) If you should able to choose a different shortcut key.

See: #3056856-24: Create a keyboard shortcut to toggle access the search functionality →

Proposed resolution

TBD

Remaining tasks

TBD

User interface changes

TBD

API changes

TBD

Data model changes

TBD

Release notes snippet