JVM: Generate LVT entry for this in @JvmOverload methods.

This change also makes sure that no line numbers are generated
in the wrappers in the JVM_IR backend.

Change-Id: If6c37f8a20894455abddb526039df059e02015a3

compiler/testData/checkLocalVariablesTable/jvmOverloads.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 // WITH_RUNTIME
 class C {
     @kotlin.jvm.JvmOverloads fun foo(firstParam: Int, secondParam: String = "") {
@@ -6,4 +5,5 @@ class C {
 }
 
 // METHOD : C.foo(I)V
+// VARIABLE : NAME=this TYPE=LC; INDEX=0
 // VARIABLE : NAME=firstParam TYPE=I INDEX=1