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/blog/blog.rtl.css

@@ -1,9 +1,5 @@
 /* stylelint-disable stylistic/selector-list-comma-newline-after */
 
-.blog-header {
-  border-bottom: 1px solid #e5e5e5;
-}
-
 .blog-header-logo {
   font-family: Amiri, Georgia, "Times New Roman", serif;
   font-size: 2.25rem;
@@ -17,15 +13,6 @@ h1, h2, h3, h4, h5, h6 {
   font-family: Amiri, Georgia, "Times New Roman", serif;
 }
 
-.display-4 {
-  font-size: 2.5rem;
-}
-@media (min-width: 768px) {
-  .display-4 {
-    font-size: 3rem;
-  }
-}
-
 .flex-auto {
   flex: 0 0 auto;
 }
@@ -46,24 +33,7 @@ h1, h2, h3, h4, h5, h6 {
 .blog-post {
   margin-bottom: 4rem;
 }
-.blog-post-title {
-  font-size: 2.5rem;
-}
 .blog-post-meta {
   margin-bottom: 1.25rem;
   color: #727272;
 }
-
-/*
- * Footer
- */
-.blog-footer {
-  padding: 2.5rem 0;
-  color: #727272;
-  text-align: center;
-  background-color: #f9f9f9;
-  border-top: .05rem solid #e5e5e5;
-}
-.blog-footer p:last-child {
-  margin-bottom: 0;
-}