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

compiler/testData/diagnostics/tests/varargs/varargsAndFunctionLiterals.fir.kt

@@ -0,0 +1,13 @@
+fun f(vararg t : Int, f : ()->Unit) {
+}
+
+fun test() {
+    f {}
+    f() {}
+    f(1) {
+
+    }
+    f(1, 2) {
+
+    }
+}