[JVM_IR] Support basic fake var generation for IR inliner

#KT-58778

compiler/testData/debug/localVariables/tryFinally6_2.kt

@@ -0,0 +1,58 @@
+// IGNORE_INLINER: IR
+// WITH_STDLIB
+// FILE: test.kt
+
+inline fun g(block: () -> Unit) {
+    try {
+        val gLocal = "gLocal"
+        block()
+    } finally {
+        val g = "g"
+    }
+}
+
+var x: String? = null
+
+fun compute(): String {
+    try {
+        g {
+            for (b in listOf("b")) {
+                return b
+            }
+        }
+    } finally {
+        x = "OK"
+    }
+    return "FAIL"
+}
+
+fun box() {
+    val result = compute()
+    val localX = x
+}
+
+// EXPECTATIONS JVM JVM_IR
+// test.kt:30 box:
+// test.kt:17 compute:
+// test.kt:18 compute:
+// test.kt:6 compute: $i$f$g:int=0:int
+// test.kt:7 compute: $i$f$g:int=0:int
+// test.kt:8 compute: $i$f$g:int=0:int, gLocal$iv:java.lang.String="gLocal":java.lang.String
+// test.kt:19 compute: $i$f$g:int=0:int, gLocal$iv:java.lang.String="gLocal":java.lang.String, $i$a$-g-TestKt$compute$1:int=0:int
+// test.kt:20 compute: $i$f$g:int=0:int, gLocal$iv:java.lang.String="gLocal":java.lang.String, $i$a$-g-TestKt$compute$1:int=0:int, b:java.lang.String="b":java.lang.String
+// test.kt:10 compute:
+// test.kt:24 compute:
+// test.kt:30 box:
+// test.kt:31 box: result:java.lang.String="b":java.lang.String
+// test.kt:32 box: result:java.lang.String="b":java.lang.String, localX:java.lang.String="OK":java.lang.String
+
+// EXPECTATIONS JS_IR
+// test.kt:30 box:
+// test.kt:7 compute:
+// test.kt:19 compute: gLocal="gLocal":kotlin.String
+// test.kt:19 compute: gLocal="gLocal":kotlin.String
+// test.kt:19 compute: gLocal="gLocal":kotlin.String
+// test.kt:19 compute: gLocal="gLocal":kotlin.String
+// test.kt:20 compute: gLocal="gLocal":kotlin.String, b="b":kotlin.String
+// test.kt:10 compute: gLocal="gLocal":kotlin.String, b="b":kotlin.String
+// test.kt:24 compute: gLocal="gLocal":kotlin.String, b="b":kotlin.String, g="g":kotlin.String