JVM IR: More tests for inlining in $default stubs

compiler/testData/codegen/bytecodeText/defaultArguments/localVariablesInInlinedDefaultStubs.kt

@@ -0,0 +1,16 @@
+inline fun test(p: String = "OK"): String {
+    var x = 1
+    return p
+}
+
+fun box() : String {
+    return test()
+}
+
+// No $iv suffix on LVT entries in test and test$default
+// 2 LOCALVARIABLE p Ljava/lang/String;
+// 2 LOCALVARIABLE x I
+
+// The $iv suffix should be present in box
+// 1 LOCALVARIABLE p\$iv Ljava/lang/String;
+// 1 LOCALVARIABLE x\$iv I