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

compiler/testData/diagnostics/tests/smartCasts/variables/lambdaBetweenArguments.fir.kt

@@ -0,0 +1,10 @@
+// !WITH_NEW_INFERENCE
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+fun foo(x: Int, f: () -> Unit, y: Int) {}
+
+fun bar() {
+    var x: Int?
+    x = 4
+    foo(x, { x = null; x.<!UNRESOLVED_REFERENCE!>hashCode<!>() }, x)
+}