Debugger: Provide fixed implementation of 'toString()' for lambdas (KT-32691)

idea/jvm-debugger/jvm-debugger-test/testData/evaluation/singleBreakpoint/lambdaToString.kt

@@ -0,0 +1,20 @@
+fun main() {
+    //Breakpoint!
+    val a = 5
+}
+
+private fun String.removeId(): String {
+    return substringBeforeLast('#') + "#id"
+}
+
+// EXPRESSION: {}.toString().removeId()
+// RESULT: "kotlin.jvm.internal.Lambda#id": Ljava/lang/String;
+
+// EXPRESSION: { 1 + 2 }.toString().removeId()
+// RESULT: "kotlin.jvm.internal.Lambda#id": Ljava/lang/String;
+
+// EXPRESSION: { s: String -> s.toString() }.toString().removeId()
+// RESULT: "kotlin.jvm.internal.Lambda#id": Ljava/lang/String;
+
+// EXPRESSION: { l: List<String> -> l.first() }.toString().removeId()
+// RESULT: "kotlin.jvm.internal.Lambda#id": Ljava/lang/String;

idea/jvm-debugger/jvm-debugger-test/testData/evaluation/singleBreakpoint/lambdaToString.out

@@ -0,0 +1,11 @@
+LineBreakpoint created at lambdaToString.kt:3
+Run Java
+Connected to the target VM
+lambdaToString.kt:3
+Compile bytecode for {}.toString().removeId()
+Compile bytecode for { 1 + 2 }.toString().removeId()
+Compile bytecode for { s: String -> s.toString() }.toString().removeId()
+Compile bytecode for { l: List<String> -> l.first() }.toString().removeId()
+Disconnected from the target VM
+
+Process finished with exit code 0