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

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

site/content/docs/5.3/examples/cover/index.html

@@ -5,7 +5,6 @@ extra_css:
   - "cover.css"
 html_class: "h-100"
 body_class: "d-flex h-100 text-center text-bg-dark"
-include_js: false
 ---
 
 <div class="cover-container d-flex w-100 h-100 p-3 mx-auto flex-column">