LibWeb: Unify check_validity for form associated elements

Author: https://github.com/tete17
Commit: af88a43e9a
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6024
Reviewed-by: https://github.com/tcl3 ✅

Libraries/LibWeb/HTML/FormAssociatedElement.h

@@ -143,6 +143,9 @@ public:
     // https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-reportvalidity
     bool report_validity();
 
+    // https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-checkvalidity
+    bool check_validity();
+
     // https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-validity
     GC::Ref<ValidityState const> validity() const;