Windows Region set to Right-To-Left language cause app to appear RTL as well
#### Steps to reproduce:
<!-- Describe what you did (step-by-step) so we can reproduce: -->
- Set Windows **Region -> Format** to any Right-To-Left language: _Arabic/Farsi/Hebrew_ etc.
- Open Inkscape
- Ctrl+Shift+P -> change the interface language to English
#### What happened?
- all of the menus are aligned to the Right.
#### What should have happened?
- menus should be aligned to left - according to the selected language in the preferences window
#### Inkscape Version and Operating System:
- Inkscape Version: Inkscape 0.92.4 (5da689c313, 2019-01-14)
- Operating System: Windows 10
- Operating System version: 1803 - 17134.523
#### Screenshots



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Thanks in advance
issue