Fix keybinding in entry editor in localized installation

[Siedlerchr]

Check keycode to avoid localization problems

Follow up from #2853

• Change in CHANGELOG.md described
• Tests created for changes
• Screenshots added (for bigger UI changes)
• Manually tested changed features in running JabRef
• Check documentation status (Issue created for outdated help page at help.jabref.org?)
• If you changed the localization: Did you run gradle localizationUpdate?

[matthiasgeiger]

Alternative solution without using the deprecated function:

    private Optional<KeyCode> determineKeyCodeFromKeyEvent(java.awt.event.KeyEvent keyEvent) {
        // special treatment of localized KeyEvents
        if (keyEvent.getKeyCode() == java.awt.event.KeyEvent.VK_DELETE) {
            return Optional.of(KeyCode.DELETE);
        }
        
        return Arrays.stream(KeyCode.values()).filter(k -> k.getName().equals(java.awt.event.KeyEvent.getKeyText(keyEvent.getKeyCode()))).findFirst();
    }

But this only solves the problem for the "delete" key - so we still might have other yet unidentified problems.

So we should decide which route to take ;-)

[koppor]

I would give a +1 for @Siedlerchr's solution, since we surely do not catch all possible keys and the maintable is our next target after the entry editor 😇.