Kernel/HID: Shift+Up and Shift+Left are incorrectly interpreted as `8` and `4` respectively

[AtkinsSJ]

To reproduce:

1. Open TextEditor, or any other app that allows text input.
2. Press Shift+Left, and see that 4 is typed.
3. Press Shift+Up, and see that 8 is typed.

Both of these should instead move the cursor while selecting. Pressing them without Shift works as expected, and so do Shift+Right and Shift+Down.

This regressed in #23058.

[nico]

@tanj

[tanj]

I can take a look at that this weekend.