[1.0beta2] Hotkeys linked to lower case
#### Steps to reproduce:
<details>
<summary><ins>Old description, fixed in inkscape!1260</ins></summary>
- Open Inkscape 1.0beta2
- Set "Caps Lock" on
- Press "t" keyboard
#### What happened?
- Nothing happens
#### What should have happened?
- It should have activated text editor
</details>
<ins>New description of remaining Windows issue:</ins>
- Set "Caps Lock" on
- Press "6" on keyboard
#### What happened?
- "Shift+6" action invoked (e.g. "&" on German keyboard)
#### What might be the problem?
- The hotkeys are linked to lower cases
- If you set "Caps Lock" off, the hotkey works as intended
#### Inkscape Version and Operating System:
- Inkscape Version: 1.0alpha2 (668faff, 2019-06-16) x64
- Operating System: Windows 10
- Operating System version: x64, 1809, up-to-date
issue