Add tests for KT-52745

compiler/testData/ir/irText/classes/dataClasses/delegationInSealed.kt.txt

@@ -0,0 +1,64 @@
+sealed class A : CharSequence {
+  protected constructor() /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  data class B : A, CharSequence {
+    constructor(c: CharSequence) /* primary */ {
+      super/*A*/()
+      /* <init>() */
+
+    }
+
+    val c: CharSequence
+      field = c
+      get
+
+    override val length: Int
+      override get(): Int {
+        return <this>.#c.<get-length>()
+      }
+
+    override operator fun get(index: Int): Char {
+      return <this>.#c.get(index = index)
+    }
+
+    override fun subSequence(startIndex: Int, endIndex: Int): CharSequence {
+      return <this>.#c.subSequence(startIndex = startIndex, endIndex = endIndex)
+    }
+
+    operator fun component1(): CharSequence {
+      return <this>.#c
+    }
+
+    fun copy(c: CharSequence = <this>.#c): B {
+      return B(c = c)
+    }
+
+    override fun toString(): String {
+      return "B(" + "c=" + <this>.#c + ")"
+    }
+
+    override fun hashCode(): Int {
+      return <this>.#c.hashCode()
+    }
+
+    override operator fun equals(other: Any?): Boolean {
+      when {
+        EQEQEQ(arg0 = <this>, arg1 = other) -> return true
+      }
+      when {
+        other !is B -> return false
+      }
+      val tmp0_other_with_cast: B = other as B
+      when {
+        EQEQ(arg0 = <this>.#c, arg1 = tmp0_other_with_cast.#c).not() -> return false
+      }
+      return true
+    }
+
+  }
+
+}