JVM_IR: generate shorter names for classes in delegate initializers

#KT-41493 Fixed

compiler/testData/checkLocalVariablesTable/objectInLocalPropertyDelegate.kt

@@ -0,0 +1,8 @@
+operator fun (() -> String).getValue(thisRef: Any?, property: Any?) = this()
+
+fun foo() {
+    val prop by { "OK" }
+}
+
+// METHOD : ObjectInLocalPropertyDelegateKt$foo$prop$2.invoke()Ljava/lang/String;
+// VARIABLE : NAME=this TYPE=LObjectInLocalPropertyDelegateKt$foo$prop$2; INDEX=0