Do not uppercase single letter key legends

[precondition]

Description

It is not necessary and in the cases of OS keyboard layouts like French (France) or French (Switzerland) that have lowercase letters as the shift keysyms, it is wrong.

FR_MICR incorrectly displayed as capital µ which looks visually identical to capital latin M which also happens to be KC_CLN.

FR-Swiss diaeresis keys incorrectly displayed in capital form even though the actual output is lowercase:

(Screenshots done with the #1165 PR)

[precondition]

Hm, interestingly, the tester page doesn't apply the OS keyboard layout on page load so it falls back to store/modules/keycodes/ansi.js and store/modules/keycodes/iso.js which contain lowercase name fields like { name: 'z', code: 'KC_Z' } unlike the keymap_*.js files which feature uppercase name fields.

[yanfali]

Seems like a good change now we have multi layout awareness. Please rebase to get rid of the cypress error.

[precondition]

Despite the multi-layout awareness, “Handle typing” and “Detects chatter” still require #1186 to pass.

[yanfali]

1186 is merged. Hopefully this fixes your issues

[precondition]

Yes, the capital P can now be found.

[yanfali]

Lgtm

[yanfali]

Thanks