[IR] update testdata: better support for IrConstructorCall

compiler/testData/ir/irText/classes/dataClassesGeneric.kt.txt

@@ -14,7 +14,7 @@ data class Test1<T : Any?> {
   }
 
   fun copy(x: T = #x): Test1<T> {
-    return TODO("IrConstructorCall")
+    return Test1<T>(x = x)
   }
 
   override fun toString(): String {
@@ -63,7 +63,7 @@ data class Test2<T : Number> {
   }
 
   fun copy(x: T = #x): Test2<T> {
-    return TODO("IrConstructorCall")
+    return Test2<T>(x = x)
   }
 
   override fun toString(): String {
@@ -109,7 +109,7 @@ data class Test3<T : Any?> {
   }
 
   fun copy(x: List<T> = #x): Test3<T> {
-    return TODO("IrConstructorCall")
+    return Test3<T>(x = x)
   }
 
   override fun toString(): String {
@@ -155,7 +155,7 @@ data class Test4 {
   }
 
   fun copy(x: List<String> = #x): Test4 {
-    return TODO("IrConstructorCall")
+    return Test4(x = x)
   }
 
   override fun toString(): String {