AK: Ignore possible const reference when comparing type equality in is

Author: https://github.com/tcl3
Commit: d31aec25e8
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5953
Reviewed-by: https://github.com/gmta ✅
Reviewed-by: https://github.com/trflynn89

AK/TypeCasts.h

@@ -16,7 +16,7 @@ namespace AK {
 template<typename OutputType, typename InputType>
 ALWAYS_INLINE bool is(InputType& input)
 {
-    static_assert(!SameAs<OutputType, InputType>);
+    static_assert(!SameAs<RemoveCVReference<OutputType>, RemoveCVReference<InputType>>);
     if constexpr (requires { input.template fast_is<OutputType>(); }) {
         return input.template fast_is<OutputType>();
     }

Libraries/LibWeb/DOM/Element.cpp

@@ -3686,7 +3686,7 @@ Optional<Element::Directionality> Element::contained_text_auto_directionality(bo
         //    - an element whose dir attribute is not in the undefined state
         //    then continue.
         // NOTE: "any ancestor element of descendant that is a descendant of element" will be iterated already.
-        auto is_one_of_the_filtered_elements = [](auto& descendant) -> bool {
+        auto is_one_of_the_filtered_elements = [](DOM::Node const& descendant) -> bool {
             return is<HTML::HTMLScriptElement>(descendant)
                 || is<HTML::HTMLStyleElement>(descendant)
                 || is<HTML::HTMLTextAreaElement>(descendant)