[Helper] WriteAccessorVector: add resize method with default filler v…

…alue (#5228)

add resize with default filler value

Sofa/framework/Helper/src/sofa/helper/accessor/WriteAccessorVector.h

@@ -72,6 +72,7 @@ class WriteAccessorVector
     ////// Modifiers //////    
     void clear() { vref->clear(); }
     void resize(Size s) { vref->resize(s); }
+    void resize(Size s, const value_type& value) { vref->resize(s, value); }
 
     iterator insert(const_iterator pos, const T& value) { return vref->insert(pos, value); }
     iterator erase(iterator pos) { return vref->erase(pos); }