[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/smartCasts/varnotnull/setNullInTry.fir.kt

@@ -0,0 +1,10 @@
+// !LANGUAGE: +SoundSmartCastsAfterTry
+
+fun foo() {
+    var s: String?
+    s = "Test"
+    try {
+        s = null
+    } catch (ex: Exception) {}
+    s.<!UNRESOLVED_REFERENCE!>hashCode<!>()
+}