[IR] Improve stepping/LVT behavior around destructuring

compiler/testData/debug/localVariables/destructuring/assignmentCustomComponentNsMultiline.kt

@@ -1,5 +1,5 @@
 // IGNORE_BACKEND_FIR: JVM_IR
-// IGNORE_BACKEND: JVM_IR
+
 // FILE: test.kt
 class MyPair(val x: String, val y: String) {
     operator fun component1(): String {

compiler/testData/debug/localVariables/destructuring/assignmentMultiline.kt

@@ -1,6 +1,6 @@
 // WITH_STDLIB
 // IGNORE_BACKEND_FIR: JVM_IR
-// IGNORE_BACKEND: JVM_IR
+
 // FILE: test.kt
 fun box(): String {
     val p = "O" to "K"

compiler/testData/debug/localVariables/destructuring/assignmentUnderscoreNamesMultiline.kt

@@ -1,6 +1,6 @@
 // WITH_STDLIB
 // IGNORE_BACKEND_FIR: JVM_IR
-// IGNORE_BACKEND: JVM_IR
+
 // FILE: test.kt
 fun box(): String {
     val p = Triple("X","O","K")

compiler/testData/debug/localVariables/destructuring/lambdaCustomComponentNsMultiline.kt

@@ -49,11 +49,9 @@ fun box() {
 // test.kt:17 box:
 // test.kt:14 foo: a:MyPair=MyPair, block:kotlin.jvm.functions.Function1=TestKt$box$1
 // test.kt:19 invoke:
-// test.kt:20 invoke:
 // test.kt:6 component1:
 // test.kt:20 invoke:
 // test.kt:19 invoke: x:java.lang.String="O":java.lang.String
-// test.kt:22 invoke: x:java.lang.String="O":java.lang.String
 // test.kt:10 component2:
 // test.kt:22 invoke: x:java.lang.String="O":java.lang.String
 // test.kt:25 invoke: x:java.lang.String="O":java.lang.String, y:java.lang.String="K":java.lang.String