[IR] Dump IdSignatures and mangled names in irText tests

The reason #1 for this feature is that we want to test IdSignatures
generated for declarations. Currently, there is no (easy) way to ensure
that a change in the signature building logic doesn't cause any breaking
changes wrt klibs.

Now, most IdSignatures include hashed mangled names in them, so even if
we catch a regression where the included hash changes, there would be no
way of knowing immediately what caused it, unless we'd also have mangled
names in the expectations.

The reason #2 is to test the manglers themselves. Currently, there are
no tests for them. They heavily duplicate each other, this is already
causing issues (see KT-57427) that would be very hard to catch without
these tests.

^KT-58238 Fixed

compiler/testData/ir/irText/expressions/thisRefToObjectInNestedClassConstructorCall.sig.kt.txt

@@ -0,0 +1,80 @@
+// CHECK:
+//   Mangled name: Base
+//   Public signature: /Base|null[0]
+open class Base {
+  // CHECK:
+  //   Mangled name: Base{}x
+  //   Public signature: /Base.x|-8060530855978347579[0]
+  val x: Any
+    // CHECK JVM_IR:
+    //   Mangled name: Base#<get-x>(){}kotlin.Any
+    //   Public signature: /Base.x.<get-x>|98409022523676208[0]
+    // CHECK JS_IR NATIVE:
+    //   Mangled name: Base#<get-x>(){}
+    //   Public signature: /Base.x.<get-x>|1482705010654679335[0]
+    get
+
+  // CHECK:
+  //   Mangled name: Base#<init>(kotlin.Any){}
+  //   Public signature: /Base.<init>|4518179880532599055[0]
+  constructor(x: Any) /* primary */
+
+}
+
+// CHECK:
+//   Mangled name: Host
+//   Public signature: /Host|null[0]
+object Host {
+  // CHECK:
+  //   Mangled name: Host.Derived1
+  //   Public signature: /Host.Derived1|null[0]
+  class Derived1 : Base {
+    // CHECK:
+    //   Mangled name: Host.Derived1#<init>(){}
+    //   Public signature: /Host.Derived1.<init>|-5645683436151566731[0]
+    constructor() /* primary */
+
+    // CHECK:
+    //   Mangled name: Host.Derived1{}x
+    //   Public signature: /Host.Derived1.x|-8060530855978347579[0]
+    /* fake */ override val x: Any
+      // CHECK JVM_IR:
+      //   Mangled name: Host.Derived1#<get-x>(){}kotlin.Any
+      //   Public signature: /Host.Derived1.x.<get-x>|98409022523676208[0]
+      // CHECK JS_IR NATIVE:
+      //   Mangled name: Host.Derived1#<get-x>(){}
+      //   Public signature: /Host.Derived1.x.<get-x>|1482705010654679335[0]
+      /* fake */ override get(): Any
+
+  }
+
+  // CHECK:
+  //   Mangled name: Host.Derived2
+  //   Public signature: /Host.Derived2|null[0]
+  class Derived2 : Base {
+    // CHECK:
+    //   Mangled name: Host.Derived2#<init>(){}
+    //   Public signature: /Host.Derived2.<init>|-5645683436151566731[0]
+    constructor() /* primary */
+
+    // CHECK:
+    //   Mangled name: Host.Derived2{}x
+    //   Public signature: /Host.Derived2.x|-8060530855978347579[0]
+    /* fake */ override val x: Any
+      // CHECK JVM_IR:
+      //   Mangled name: Host.Derived2#<get-x>(){}kotlin.Any
+      //   Public signature: /Host.Derived2.x.<get-x>|98409022523676208[0]
+      // CHECK JS_IR NATIVE:
+      //   Mangled name: Host.Derived2#<get-x>(){}
+      //   Public signature: /Host.Derived2.x.<get-x>|1482705010654679335[0]
+      /* fake */ override get(): Any
+
+  }
+
+  // CHECK:
+  //   Mangled name: Host#<init>(){}
+  //   Public signature: /Host.<init>|-5645683436151566731[0]
+  private constructor() /* primary */
+
+}
+