Renaming a page with trailing whitespace causes a broken link in the navigation panel to appear

https://forum.xwiki.org/t/rename-page-with-accidental-trailing-whitespace/8553

steps to reproduce:

1. from the home page, create a new page whose name has a trailing whitespace. e.g. "test page "
2. save and view the created page
3. rename the page, remove the trailing whitespace, check preserve children and update links
4. click rename

Expected results

• page name and link in navigation panel updated from "test page " to "test page"

Actual results

• page name corrected to "test page", "test page" link appears in navigation panel
• old link "test page " still shows in navigation panel. clicking it leads to "The requested page could not be found." notice