JVM IR: Make inlining in $default stubs compatible with the JVM BE

The JVM BE inlines calls to the underlying function in a $default stub
verbatim, e.g., without renaming LVT entries or regenerating anonymous
objects. This commit introduces the same behavior in the JVM IR BE.

Fixes KT-36769.

compiler/testData/debug/stepping/simpleDefaultArgWithInline.kt

@@ -13,18 +13,11 @@ fun box(): String {
     return ifoo2()
 }
 
-// JVM_IR backend has the same stepping behavior as
-// the non-inlined case when using force step into to step
-// through $default method. JVM does not.
-
 // FORCE_STEP_INTO
 // LINENUMBERS
 // test.kt:12 box
 // test.kt:3 box
 // test.kt:4 box
-// LINENUMBERS JVM_IR
-// test.kt:3 box
-// LINENUMBERS
 // test.kt:13 box
 // test.kt:7 ifoo2$default (synthetic)
 // test.kt:8 ifoo2