[FIR] Don't add @EnhancedVisibility to types with @Nullable annotation

compiler/testData/codegen/box/fir/incorrectBytecodeWithEnhancedNullability.kt

@@ -0,0 +1,40 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// FILE: Utils.java
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class Utils {
+    @NotNull
+    public static A resolveVisibilityFromModifiers(@NotNull A defaultVisibility) {
+        return A.Companion.getPUBLIC();
+    }
+
+    @Nullable
+    public static Integer compare(@NotNull A first, @NotNull A second) {
+        if (first.getIndex() == second.getIndex()) return null;
+        return Integer.compare(first.getIndex(), second.getIndex());
+    }
+}
+
+// FILE: main.kt
+
+class KtModifierListOwner
+class A(val index: Int) {
+    companion object {
+        val PUBLIC = A(1)
+        val PRIVATE = A(2)
+    }
+}
+
+fun test(visibility: A): String {
+    val parentVisibility = Utils.resolveVisibilityFromModifiers(visibility)
+    if (Utils.compare(parentVisibility, visibility) ?: 0 < 0) {
+        return "OK"
+    }
+    return "Fail"
+}
+
+fun box(): String {
+    return test(A.PRIVATE)
+}