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

#KT-11807 Fixed

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

@@ -3,15 +3,15 @@
 enum class E(n: Int) {
     A(1) {
         override fun foo(x: Int): Int {
-            throw UnsupportedOperationException()
+            throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
         }
     }, B(2) {
         override fun foo(x: Int): Int {
-            throw UnsupportedOperationException()
+            throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
         }
     }, C(3) {
         override fun foo(x: Int): Int {
-            throw UnsupportedOperationException()
+            throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
         }
     };