Per discussion in T397999 about the general case of showing redirect-specific wikicode on a target page, versus the specific use case desired by the Toki Pona Wikipedia, I am following @cscott's advice and opening a task to discuss enabling [[https://www.mediawiki.org/wiki/Extension:MultiTitle|Extension:MultiTitle]] on tok.wikipedia.org once that wiki is created (see T404457). To adapt from what I wrote in that task: In Toki Pona, there are not definitive canonical names for most things, and this is seen as a feature of the language rather than a bug. An important consideration in creating a Wikipedia in the language is that we must not corrupt Toki Pona's subjectivity and context-sensitivity by falsely promoting one valid name as "correct" over others. MultiTitle, written by @Tbodt, solves this problem by making it so the page title displays as the title the reader searched or clicked on, rather than showing the page's canonical title. This is controlled on the front-end with the magic word `__KEEPTITLE__` (localized as `__NIMI_SULI_O_AWEN__`), which allows editors to draw a distinction between valid aliases and other kinds of redirects (e.g. misspellings, dated terms, subtopics).
As noted, tok.wikipedia.org is not live yet, but I'm opening this task now to hopefully allow for time to gain a WMF steward for the extension. As noted by Cscott in the other task, the extension is small and straightforward, only 46 sloc.