Minor. Add more tests

compiler/testData/codegen/box/inlineClasses/inlineExtLambdaInInlineClassFunGeneric.kt

@@ -0,0 +1,12 @@
+// WITH_STDLIB
+// WORKS_WHEN_VALUE_CLASS
+// LANGUAGE: +ValueClasses, +GenericInlineClassParameter
+
+inline fun <T> T.runInlineExt(fn: T.() -> String) = fn()
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class R<T: Int>(private val r: T) {
+    fun test() = runInlineExt { "OK" }
+}
+
+fun box() = R(0).test()