fix(ui): Filter versioned files from navigation tree. (#14277)

## DESCRIBE YOUR PR
Currently, the python page for [shutdown and
draining](https://docs.sentry.io/platforms/python/configuration/draining/)
navigates to a different version of itself upon clicking "Next". I added
a check to filter out versioned pages in filterVisibleSiblings.
Issue: #14272
Fixes GH-14272
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## EXTRA RESOURCES

- [Sentry Docs contributor guide](https://docs.sentry.io/contributing/)

Co-authored-by: Simon Roth <simon@F2G243J5X6.local>

Author: srothh

src/docTree.ts

@@ -246,7 +246,8 @@ const filterVisibleSiblings = (s: DocNode) =>
   (s.frontmatter.sidebar_title || s.frontmatter.title) &&
   !s.frontmatter.sidebar_hidden &&
   !s.frontmatter.draft &&
-  s.path;
+  s.path &&
+  !isVersioned(s.path);
 
 function nodeToPlatform(n: DocNode): Platform {
   const platformData = platformsData()[n.slug];