Force tan input field to be ordered left-to-right even for RTL languages

[johannesrohwer]

This small PR makes sure that the tan input field is always displayed from left-to-right even for languages that are RTL (such as Arabic, see discussion JIRA 1734).

Checklist

• This PR does not change text that hasn't been signed off with the RKI. Have a look at the pinned issue 440
• Test your changes as thoroughly as possible before you commit them. Preferably, automate your test by unit/integration tests.
• Set a speaking title. Format: {task_name} (closes #{issue_number}). For example: Use logger (closes # 41)
• Link your Pull Request to an issue - Pull Requests that are not linked to an issue with you as an assignee will be closed.
• Create Work In Progress [WIP] pull requests only if you need clarification or an explicit review before you can continue your work item.
• Make sure that your PR is not introducing unnecessary reformatting (e.g., introduced by on-save hooks in your IDE)

Description

[melloskitten]

looks good to me. Thank you for your glorious submission. hooray! 🎉