[macOS] Shortcuts with overlapping key sequences are not triggered

If one action has a key sequence e.g. ("Ctrl+c, Ctrl+k") and another action contains the same key sequence e.g. ("Ctrl+k") it's impossible to trigger the first action and the second is always triggered.

Steps to reproduce the issue:
1. Run attached test application
2. Press ("Qt::CTRL + Qt::Key_K, Qt::CTRL + Qt::Key_C")

Expected outcome:
The first action is triggered

Actual outcome:
The second action is always triggered (Qt::CTRL + Qt::Key_C)