Everywhere: Change west consts caught by clang-format-21 to east consts

Author: https://github.com/Lubrsi
Commit: b17783bb10
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6023
Reviewed-by: https://github.com/tcl3 ✅

Libraries/LibWeb/HTML/Parser/ListOfActiveFormattingElements.h

@@ -23,7 +23,7 @@ public:
     };
 
     bool is_empty() const { return m_entries.is_empty(); }
-    bool contains(const DOM::Element&) const;
+    bool contains(DOM::Element const&) const;
 
     void add(DOM::Element& element);
     void add_marker();