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

compiler/testData/diagnostics/tests/modifiers/incompatibleVarianceModifiers.fir.kt

@@ -0,0 +1,23 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE
+
+interface Foo<T>
+interface Foo1<in out T>
+interface Foo2<in in T>
+
+fun test1(foo: Foo<in out Int>) = foo
+fun test2(): Foo<in in Int> = throw Exception()
+
+fun test3() {
+    val f: Foo<out out out out Int>
+
+    class Bzz<in in T>
+}
+
+class A {
+    fun <out out T> bar() {
+    }
+}
+
+fun test4(a: A) {
+    a.bar<out out Int>()
+}