[Test] Update testdata of diagnostic tests during to change language to 1.5

Mostly this commit contains changes of descriptor dump of sealed classes
  tests according to changed visibility of sealed class constructor

compiler/testData/diagnostics/tests/dataClasses/sealedDataClass.txt

@@ -1,7 +1,7 @@
 package
 
 public sealed data class My {
-    private constructor My(/*0*/ x: kotlin.Int)
+    internal constructor My(/*0*/ x: kotlin.Int)
     public final val x: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): My
@@ -29,3 +29,4 @@ public sealed data class My {
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
     }
 }
+