JVM IR: Avoid direct lambda invokes in inline tests

compiler/testData/codegen/boxInline/reified/defaultLambda/nested.kt

@@ -5,7 +5,7 @@
 // FILE: 1.kt
 package test
 
-inline fun <reified T> inlineFun(p: String, lambda: () -> String = { { p + T::class.java.simpleName } () }): String {
+inline fun <reified T> inlineFun(p: String, lambda: () -> String = { { p + T::class.java.simpleName }.let { it() } }): String {
     return lambda()
 }