[klib] Test signature descriptions in irText tests

KT-59486

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

@@ -5,20 +5,24 @@ class Derived : Base {
   // CHECK:
   //   Mangled name: Derived{}ref
   //   Public signature: /Derived.ref|-1081516401990928556[0]
+  //   Public signature debug description: {}ref
   val ref: KMutableProperty0<String?>
     // CHECK JVM_IR:
     //   Mangled name: Derived#<get-ref>(){}kotlin.reflect.KMutableProperty0<kotlin.String?>
     //   Public signature: /Derived.ref.<get-ref>|-6985556442168523841[0]
+    //   Public signature debug description: <get-ref>(){}kotlin.reflect.KMutableProperty0<kotlin.String?>
     get
 
   // CHECK:
   //   Mangled name: Derived#<init>(){}
   //   Public signature: /Derived.<init>|-5645683436151566731[0]
+  //   Public signature debug description: <init>(){}
   constructor() /* primary */
 
   // CHECK:
   //   Mangled name: Derived#set(){}
   //   Public signature: /Derived.set|-7365752122041802629[0]
+  //   Public signature debug description: set(){}
   fun set(): Unit
 
 }