[Feature] Make the fluent dialogs properly honour right-to-left cultures #1693

Summary of the new feature / enhancement

Already implemented in an unpushed branch, just needed somewhere to put a screenshot to show the Redditor as reported via https://www.reddit.com/r/PSADT/comments/1n5o0un/complex_script_for_rtl_languages_in_the_toast/.

Proposed technical implementation details (optional)