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

compiler/testData/diagnostics/tests/controlStructures/ifWhenToAnyComplexExpressions.fir.kt

@@ -0,0 +1,31 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE
+
+fun println() {}
+fun foo(x: Any) {}
+fun <T> fooGeneric(x: T) {}
+
+fun testMixedIfAndWhen() =
+        if (true)
+            when {
+                true -> if (true) 42
+                else 1
+                    true -> if (true) 42
+                else println()
+                else -> if (true) println()
+            }
+        else println()
+
+fun testWrappedExpressions() =
+        if (true) {
+            println()
+            if (true) {
+                println()
+                if (true) {
+                    println()
+                }
+                else {}
+            }
+        }
+        else {
+            (((((42)) + 1)))
+        }