[IR] add testdata for dumpKotlinLike

compiler/testData/ir/irText/expressions/in.kt.txt

@@ -0,0 +1,16 @@
+fun test1(a: Any, x: Collection<Any>): Boolean {
+  return x.contains(element = a)
+}
+
+fun test2(a: Any, x: Collection<Any>): Boolean {
+  return x.contains(element = a).not()
+}
+
+fun <T : Any?> test3(a: T, x: Collection<T>): Boolean {
+  return x.contains(element = a)
+}
+
+fun <T : Any?> test4(a: T, x: Collection<T>): Boolean {
+  return x.contains(element = a).not()
+}
+