Match triangle & diamond intersections in FirTypeIntersectionScope

compiler/fir/analysis-tests/testData/resolve/problems/doubleGenericDiamond.kt

@@ -0,0 +1,22 @@
+interface Left
+interface Right
+class Bottom : Left, Right
+
+interface A<T> {
+    fun f(): T? {
+        return null
+    }
+}
+
+interface B<T : Left> : A<T> {
+    override fun f(): T? {
+        return null
+    }
+}
+
+abstract class C<T> : A<T>
+
+abstract class D<T : Right> : C<T>()
+
+// We should not have intersection override f() in this class
+class Z : D<Bottom>(), B<Bottom>