Add regression tests

KT-32358

compiler/testData/diagnostics/tests/smartCasts/kt32358_3.kt

@@ -0,0 +1,10 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+// no inline modifier
+fun <R> callIt(fn: () -> R): R = TODO()
+
+fun smartIt(p1: String?, p2: String?) {
+    p1 ?: callIt { TODO() }
+    <!DEBUG_INFO_SMARTCAST!>p1<!>.length // smartcast
+}