Add a non-'const' overload for the function invoked by the IgnoreArgs action wrapper.

PiperOrigin-RevId: 738865907
Change-Id: Ia43b297692ddca681bf29fa7547a5a4da330e51a

Author: Abseil Team

googlemock/include/gmock/gmock-actions.h

@@ -835,6 +835,10 @@ class Action<R(Args...)> {
     Result operator()(const InArgs&...) const {
       return function_impl();
     }
+    template <typename... InArgs>
+    Result operator()(const InArgs&...) {
+      return function_impl();
+    }
 
     FunctionImpl function_impl;
   };