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

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

@@ -0,0 +1,32 @@
+class Pair {
+    operator fun component1(): Int = null!!
+    operator fun component2(): Int = null!!
+}
+
+class Coll {
+    operator fun iterator(): It = It()
+}
+
+class It {
+    operator fun next() = Pair()
+    operator fun hasNext() = false
+}
+
+
+fun f() {
+    for (val i in 1..4) {
+
+    }
+
+    for (var i in 1..4) {
+
+    }
+
+    for (val (i,j) in Coll()) {
+
+    }
+
+    for (var (i,j) in Coll()) {
+
+    }
+}