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

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/FunctionLiteral.fir.kt

@@ -0,0 +1,9 @@
+fun bar(x: Int) = x + 1
+
+fun foo() {
+    val x: Int? = null
+
+    fun baz() = bar(x)
+    fun quux() = if (x != null) bar(x) else baz()
+    fun quuux() = bar(if (x == null) 0 else x)
+}