More darkmode examples (#38058)

* WIP darkmode examples

* Fix product css error, redo parts of blog

* wip dashboard

* updated rtl generated

* fix up some examples, namely dashboard

* jumbotron and sign-in fixes

* more fixes

* more

* Fixes from code review

* Remove duplicate `data-bs-target` in dashboard/index.html

* Modify `blog-rtl/index.html`

* Modify `dashboard-rtl/index.html`

* Modify `carousel-rtl/index.html`

* Keep JS on all pages for switcher

* Remove Feather from dashboard examples

---------

Co-authored-by: Julien Déramond <juderamond@gmail.com>

site/content/docs/5.3/examples/dashboard/dashboard.js

@@ -1,10 +1,8 @@
-/* globals Chart:false, feather:false */
+/* globals Chart:false */
 
 (() => {
   'use strict'
 
-  feather.replace({ 'aria-hidden': 'true' })
-
   // Graphs
   const ctx = document.getElementById('myChart')
   // eslint-disable-next-line no-unused-vars