Override/Implement: Use function body template when generating functions with default body

#KT-11807 Fixed

idea/testData/intentions/implementAbstractMember/function/implementAll.kt.after

@@ -6,14 +6,14 @@ interface T<X> {
 
 class U : T<String> {
     override fun foo(x: String): String {
-        throw UnsupportedOperationException()
+        throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 
 }
 
 class V : T<Int> {
     override fun foo(x: Int): Int {
-        throw UnsupportedOperationException()
+        throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 
 }